@article{AFST_2009_6_18_S2_1_0, author = {Maryvonne Spiesser}, title = {Avant-propos}, journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques}, pages = {1--3}, publisher = {Universit\'e Paul Sabatier, Toulouse}, volume = {6e s{\'e}rie, 18}, number = {S2}, year = {2009}, doi = {10.5802/afst.1226}, mrnumber = {2561372}, language = {fr}, url = {https://afst.centre-mersenne.org/articles/10.5802/afst.1226/} }