@article{1077474126,
author = {Cohn, Harvey},
title = {The Riemann function for $\partial^2u/\partial x\partial y+H(x+y)u=0$},
journal = {Duke Math. J.},
volume = {14},
number = {1},
year = {1947},
pages = { 297-304},
language = {en},
url = {http://dml.mathdoc.fr/item/1077474126}
}
Cohn, Harvey. The Riemann function for $\partial^2u/\partial x\partial y+H(x+y)u=0$. Duke Math. J., Tome 14 (1947) no. 1, pp. 297-304. http://gdmltest.u-ga.fr/item/1077474126/