@article{1103036719, author = {Holten, Robert P.}, title = {Generalized Goursat problem.}, journal = {Pacific J. Math.}, volume = {12}, number = {4}, year = {1962}, pages = { 207-224}, language = {en}, url = {http://dml.mathdoc.fr/item/1103036719} }
Holten, Robert P. Generalized Goursat problem.. Pacific J. Math., Tome 12 (1962) no. 4, pp. 207-224. http://gdmltest.u-ga.fr/item/1103036719/