@article{03716093, title = {On the initial value problem for a partial differential equation with operator coefficients.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {3}, year = {1980}, pages = {103-111}, doi = {10.1155/S0161171280000075}, zbl = {0457.35086}, language = {en}, url = {http://dml.mathdoc.fr/item/03716093} }
El-Borai, Mahmoud M. On the initial value problem for a partial differential equation with operator coefficients.. International Journal of Mathematics and Mathematical Sciences, Tome 3 (1980) pp. 103-111. doi : 10.1155/S0161171280000075. http://gdmltest.u-ga.fr/item/03716093/