@article{1102971280,
author = {Kreyszig, Erwin},
title = {On Bergman operators for partial differential equations in two variables.},
journal = {Pacific J. Math.},
volume = {39},
number = {3},
year = {1971},
pages = { 201-208},
language = {en},
url = {http://dml.mathdoc.fr/item/1102971280}
}
Kreyszig, Erwin. On Bergman operators for partial differential equations in two variables.. Pacific J. Math., Tome 39 (1971) no. 3, pp. 201-208. http://gdmltest.u-ga.fr/item/1102971280/