@article{1102977733,
author = {Showalter, R. E.},
title = {Partial differential equations of Sobolev-Galpern type.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 787-793},
language = {en},
url = {http://dml.mathdoc.fr/item/1102977733}
}
Showalter, R. E. Partial differential equations of Sobolev-Galpern type.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 787-793. http://gdmltest.u-ga.fr/item/1102977733/