@article{1047477111, author = {Joets, Alain and Ribotta, Roland}, title = {Caustique de la surface ellipso\"\i dale \`a trois dimensions}, journal = {Experiment. Math.}, volume = {8}, number = {4}, year = {1999}, pages = { 49-55}, language = {en}, url = {http://dml.mathdoc.fr/item/1047477111} }
Joets, Alain; Ribotta, Roland. Caustique de la surface ellipsoïdale à trois dimensions. Experiment. Math., Tome 8 (1999) no. 4, pp. 49-55. http://gdmltest.u-ga.fr/item/1047477111/