Ecole des Beaux-Arts de Tours (France) - November 1976

Université de Paris-Vincennes, département des arts plastiques (France) - January 1977

Ecole des Beaux-Arts du Havre (France) - February 1977

Ecole Nationale des Beaux-Arts de Paris (France) - January 1978

2nd National Murals Conference, Chicago (USA) - April 1978

Ecole des Beaux-Arts de Tourcoing (France) - February 1979

Ecole des Beaux-Arts d'Epinal (France) - March 1979

Ecole Nationale des Arts Décoratifs de Strasbourg (France) - April 1979

Ecole Nationale des Arts Décoratifs de Paris (France) - April 1979

Ecole des Beaux-Arts d'Angers (France) - May 1979

Ecole des Beaux-Arts d'Aix en Provence (France) - May 1979

 IIème Biennale des Arts de la rue, Paris - September 1980

Cityarts, New York City (USA) - October 1981

Mass. College of Art, Boston (USA) - October 1981

University of Illinois at Chicago Circle (USA) - October 1981

Northern Illinois University (USA) - November 1981

Chicago State University (USA) - November 1981

Elmhurst College of Art, Elmhurst,ILL (USA) - November 1981

San Francisco Art Institute (USA) - November 1981

Saint Marys College of California (USA) - November 1981

San Jose State University (USA) - November 1981

S.P.A.R.K. Los Angeles (USA) - December 1981

Santa Ana College of California (USA) - December 1981

Southwestern College San Diego (USA) - December 1981

Centro Cultural de La Raza, San Diego (USA) - December 1981

Ecole Nationale des Arts Décoratifs de Paris (France) - April 1982

Konstfackskolan, Stockholm (Sweden) - September 1982

Konsthögskolan, Stockholm (Sweden) - October 1982

Arkiv for Dekorativ Konst, Lund (Sweden) - October 1982

Department of Achitecture, University of Helsinki (Finland) - October 1982

Ecole Nationale Supérieure des Beaux-Arts de Paris - February 1983

U.P. d'Architecture de Paris (France) - February 1983

Ecole des Beaux-Arts de Douai (France) - 1983

Ecole des Beaux-Arts du Havre (France) - March 1983

Ecole des Beaux-Arts de Sète (France) - March 1983

Ecole des Beaux-Arts de Montpellier (France) - March 1983

Dartington College of Art, Dartington, Devon (England) - March 1983

National Murals Conference, Volwerhampton (England) - April 1983

Institut Culturel Français de Berlin (Germany) - November 1983

Biennale des Arts de la Rue, Rueil Malmaison (France) - Juin 1986

Ecole d'Architecture de Paris La Villette (France) - May 1987

Colloque "Art, actions dans la ville, St Chamand (France) - May 1987

Ecole des Beaux-Arts du Havre (France) - June 1988

Colloque "Les murs peints dans la ville ancienne", Dijon (France) - June 1988

Ecole des Beaux-Arts de Cambrai (France)- March 1989

Ecole des Beaux-Arts de Metz (France) - March 1989

Colloque CODEJ "Les aménagements des espaces de jeux", Strasbourg (France) - March 1990

Colloque "La peinture murale en question", Fondation Gublekian, Lyon (France) - June 1990

Seminar: Le rôle du conseiller en ar public. CAUE Hauts de Seine (France) - October 1990

Ecole des Beaux-Arts d'Alger (Algeria) - April 1991

Ecole Polytechnique d'Architecture et d'Urbanisme d'Alger (Algeria) - April 1991

Centre Culturel Français d'Alger (Algeria) - April 1991

Seminar: "La consultation des artistes, des paysagistes, des urbanistes". CAUE Hauts de Seine (France) - April 1991

Colloque "Le rôle de l'art dans la ville". CAUE Ile-de-La-Réunion - July 1991

Colloque "L'art public dans l'aménagement", ville du Port, Ile de La Réunion - July 1991

Junction'92, Wakefield (England) - June 1992

Etats Généraux des Métiers d'Art, Chambéry (France) - October 1992

Public Art and Education Conference, Falmouth College of Art; Falmouth (England) - June 1997

Glasgow School of Art, Glasgow (Scotland) - October 1997

2ème Congrés Interprofessionnel de l'art contemporain (C.I.P.A.C), Tours (France) - November 1998

Vème édition Festival de Rabat (Morocco) - June 1999

Seminar "Chen Zhen". Palais de Tokyo, Paris (France) - January 2004

Round table, Forum Art Entreprise. F.I.A.C. Paris (France) - February 2004

Public Art Network Preconference, American for the Arts, Washington DC (USA) - July 2004

Symposium Ars & Urbis, Douala (Cameroun) - January 2005

Ecole des Beaux-Arts du Havre (France) - 2007

Giovani per l'Arte Pubblica (GAP) Forum Internazionale, Bologna (Italy) - May 2008

International Sculpture Center Conference, Grand Rapids (Michigan) USA - Oct. 2008

Public Art Network Preconference, American for the Arts, Baltimore (USA) - June 2010

Radius of Art - Heinrich Böll Foundation, Berlin (Germany) - February 2012

Conference "Hors-Cadre / Peinture, couleur et lumière dans l'espace public contemporain", 19 - 20 - 21 April 2012. Brussels (Belgium).

Lecture at Beaux-Arts Caen (France) - October 2012