@article{00179241, title = {Nonsmooth analysis approach to Isaac's equation.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {16}, year = {1993}, pages = {245-254}, doi = {10.1155/S0161171293000286}, zbl = {0781.90108}, language = {en}, url = {http://dml.mathdoc.fr/item/00179241} }
Zaremba, Leszek S. Nonsmooth analysis approach to Isaac's equation.. International Journal of Mathematics and Mathematical Sciences, Tome 16 (1993) pp. 245-254. doi : 10.1155/S0161171293000286. http://gdmltest.u-ga.fr/item/00179241/