Seminar on Distributive Justice and Inequality, Berlin, 20-24 May 1986: ``Progressive taxation and the inequality of incomes: A `leftist' point of view'' [Invited paper].
Southern European Congress in Economic Theory and Econometrics, Toledo, 16-18 December 1987: ``Progressive taxation and after-tax welfare: Three characterization results''.
Winter Symposium of the European Econometric Society, Venice, 6-9 January 1988: ``Some classes of functions that preserve the inequality and welfare orderings of income distributions'' [Invited paper].
Cinquièmes Journées de Microéconomie Appliquée, Toulouse, 9-10 June 1988: ``The management of water quality by the Basin Agencies: A tentative empirical appraisal''.
Third Congress of the European Economic Association, Bologna, 27-29 August 1988: ``Progressive taxation and after-tax welfare''.
Sixièmes Journées de Microéconomie Appliquée, Orléans, 29-30 May 1989: ``Some problems with progressive income taxation schemes or further reasons for quasi-linear taxation'', and ``Relative and absolute Lorenz dominance: An international comparison''.
Fifth Karlsruhe Seminar on Models and Measurement of Welfare and Inequality, Karlsruhe, 12-19 August 1990: ``Transformations of stochastic orderings'' (with A.F. Shorrocks).
Southern European Cong\-ress in Economic Theory and Econometrics, Bilbao, 15-16 November 1990: ``Egalitarian taxation schemes'' (with M. Le Breton, and A. Trannoy).
Huitièmes Journées de Microéconomie Appliquée, Caen, May 1991: `Taxation and the multidimensional redistribution of income: An impossibility result'' (with A.F. Shorrocks).
Sixth Congress of the European Economic Association, Cambridge, 31 August-2 September 1991: ``The through-time redistributive effect of income taxation: The intermediate inequality view''.
European Meeting of the Econometric Society, Cambridge, 2-6 September 1991: `Taxation and the multidimensional redistribution of income: An impossibility result'' (with A.F. Shorrocks).
Southern European Congress in Economic Theory and Econometrics, Athens, November 1991: ``The impossibility of a progressive tax structure'' (with A.F. Shorrocks).
Neuvièmes Journées de Microéconomie Appliquée, Strasbourg, 4-5 June 1992: ``Inequality and income taxation over time''.
First Social Choice and Welfare Conference, Caen, 9-12 June 1992: ``The stochastic dominance ordering of income distributions over time'' (with T. Karcher, and A. Trannoy) [Invited paper].
Econometric Society European Meeting, Uppsala, 22-26 August 1993: ``The stochastic dominance ordering of income distributions over time'' (with T. Karcher, and A. Trannoy).
European Meeting of the Econometric Society, Brussels, 24-28 August 1992: ``Inequality reducing and inequality preserving transformations of incomes I: Symmetric and individualistic transformations''.
Workshop on Inequality and the Taxation of Incomes, Bordeaux, 1-2 June 1993: ``Inequality reducing and inequality preserving transformations of incomes I: Symmetric and individualistic transformations'', and ``Progressive taxation and inequality for populations of fixed sizes or does reranking really matter?'' (with A. Nizard).
Southern European Congress in Economic Theory and Econometrics, Toulouse, 19-21 November 1992: ``Progressive taxation and inequality for populations of fixed sizes or does reranking really matter?'' (with A. Nizard).
Eigth Annual Congress of the European Economic Association, Helsinki, 27-29 August 1993: ``Progressive taxation and inequality for populations of fixed sizes or does reranking really matter?'' (with A. Nizard).
Dixièmes Journées de Microéconomie Appliquée, Sfax, 4-5 June 1993: `The stochastic dominance ordering of income distributions over time: The expected utility of the discounted sum of incomes'' (with T. Karcher, and A. Trannoy).
Southern European Congress in Economic Theory and Econometrics, Barcelona, 15-16 October 1993: `The stochastic dominance ordering of income distributions over time: The expected utility of the discounted sum of incomes'' (with T. Karcher, and A. Trannoy).
Onzièmes Journées de Microéconomie Appliquée, Marseille, 2-3 June 1994: ``The stochastic dominance ordering of intertemporal income distributions'' (with A. Trannoy).
Second International Meeting of The Society for Social Choice and Welfare, Rochester, 8-11 July 1994: ``The welfare ordering of income distributions when household types differ: Abbreviated version''.
Conference on Income Distribution and Economic Development, Universidad Carlos III de Madrid, 15-17 December 1994: ``The welfare ordering of income distributions when household types differ: Abbreviated version'' [Invited paper].
Douzièmes Journées de Microéconomie Appliquée, Clermont-Ferrand, 1-2 June 1995: ``Minimal equal sacrifice theories and income taxation''.
Third International Meeting of The Society for Social Choice and Welfare, Maastricht, 22-25 June 1996: ``Minimal equal sacrifice theories and income taxation''.
Tenth Annual Congress of the European Economic Association, Prague, 1-4 September 1995: ``The welfare ordering of income distributions when household types differ''.
Treizièmes Journées de Microéconomie Appliquée, Liège, 6-7 June 1996: ``The welfare ordering of income distributions when household types differ''.
The Distribution and Redistribution of Income Workshop #1, Leuven, 14-15 December 1995: ``Progressive income taxation and household size: In praise of the Quotient Familial'' (with A.F. Shorrocks), and ``The comparison of utility profiles over time'' (with T. Karcher, and A. Trannoy).
Seminar on Normative Economics, Social Ethics and Justice, Paris, 28 March 1996: ``Progressive income taxation and household size: In praise of the Quotient Familial'' (with A.F. Shorrocks).
Quatorzièmes Journées de Microéconomie Appliquée, Marrakech, 29-30 May 1997: ``Progressive income taxation and household size: In praise of the Quotient Familial'' (with A.F. Shorrocks).
The Distribution and Redistribution of Income Workshop #2, Bordeaux, 14-15 December 1996: ``Inequality, income taxation and equivalizing procedures'' (with U. Ebert), and ``Public goods, taxation and the inequality of utilities: The case of identical and quasi-linear preferences'' (with P. Gardères).
Journées de l'AFSE Inégalités et Redistribution, Le Mans, 13-14 May 1997: ``The Quotient Familial: A tax structure consistent with the Lorenz criterion'' (with A. Trannoy) [In French].
European Meeting of the Econometric Society, Toulouse, 27-30 August 1997: ``Minimal equal sacrifice theories and income taxation: A survey of results''.
Eleventh Annual Congress of the European Economic Association, Toulouse, 31 August-2 September 1997: ``Consistent income taxation when households are heterogeneous'' (with U. Ebert).
Institut für Volkswirtschaftslehre I Seminar, Oldenburg, 30 March 1998: `Minimal equal sacrifice theories and income taxation: A survey of results'' [Invited paper].
Fourth International Meeting of The Society for Social Choice and Welfare, Vancouver, 2-6 July 1998:``Consistent income taxation when households are heterogeneous'' (with U. Ebert).
Journées d'Etude de l'IDEP sur la Politique Familiale, Aix-en-Provence, 17-18 June 1998: ``The redistributive dimension of the family policy'' [Invited paper] [In French].
Congrés Annuel de l'AFSE, Paris, 24-25 September 1998: ``Some elements for assessing the redistributive effect of income taxation when households are heterogeneous'' [In French].
Southern European Congress in Economic Theory and Econometrics, Bologna, 23-25 October 1998: ``Consistent income taxation when households are heterogeneous'' (with U. Ebert).
Conference on Living Standards, Inequality and Taxation, THEMA, Université de Cergy-Pontoise, 10 March 1999: "Individual welfare, social deprivation and income taxation" (with S.R. Chakravarty).
Seizièmes Journées de Microéconomie Appliquée, Université Lumière Lyon 2, 3-4 June 1999: ``Will the equivalence scale approach really stand up when making comparisons of welfare and inequality'' (with U. Ebert).
Axiomatic Resource Allocation Theory, Conference in honor of Louis Gevers, Namur, 1-3 July 1999: ``Will the equivalence scale approach really stand up when making comparisons of welfare and inequality'' (with U. Ebert).
Journées de l'AFSE Développements Récents en Economie Publique et Enjeux Actuels, Marseille, 18-19 May 2000: ``Adjusting incomes for needs: Can one avoid equivalence scales?" (with U. Ebert).
Fifth International Meeting of The Society for Social Choice and Welfare, Alicante, 29 June-2 July 2000: ``Adjusting incomes for needs: Can one avoid equivalence scales?" (with U. Ebert).
Eighth World Congress of the Econometric Society, Seattle, 11--16 August 2000: ``Equivalence scales reconsidered" (with U. Ebert).
Conference New Directions in Inequality Analysis, Second Annual Meeting of LivinTaX, Cergy, 23--25 November 2000: ``The implications of income adjustment processes for normative evaluation and redistribution'' (with U. Ebert).
Dixhuitièmes Journées de Microéconomie Appliquée, CREDES, Université Nancy 2, Nancy, 7-8 Juin 2001: ``Comparisons of income distributions across heterogeneous populations'' (with S. Bazen).
Southern European Congress in Economic Theory and Econometrics,
Rethymno, Creta, 26-27 October 2001: ``Comparisons of living standards
in eight OECD countries'' (with S. Bazen).