@article{GDZPPN002191814,
title = {On the (p, q)-order and lower (p, q)-order of an entire function.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {281},
year = {1976},
pages = {53-67},
zbl = {0321.30031},
url = {http://dml.mathdoc.fr/item/GDZPPN002191814}
}
Bajpai, S.K.; Juneja, O.P.; Kapor, G.P. On the (p, q)-order and lower (p, q)-order of an entire function.. Journal für die reine und angewandte Mathematik, Tome 281 (1976) pp. 53-67. http://gdmltest.u-ga.fr/item/GDZPPN002191814/