@article{2834,
author = {Lo, Chi Yeung},
title = {Boundary value problems of generalized axially symmetric Helmholtz equations},
journal = {Portugaliae mathematica},
volume = {36},
year = {1977},
pages = {279-289},
zbl = {0446.35041},
mrnumber = {0597850},
language = {en},
url = {http://dml.mathdoc.fr/item/2834}
}
Lo, Chi Yeung. Boundary value problems of generalized axially symmetric Helmholtz equations. Portugaliae mathematica, Tome 36 (1977) pp. 279-289. http://gdmltest.u-ga.fr/item/2834/