@article{GDZPPN00220326X,
title = {On the definition and properties of p-superharmonic functions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {372},
year = {1986},
pages = {67-79},
zbl = {0572.31004},
url = {http://dml.mathdoc.fr/item/GDZPPN00220326X}
}
Lindqvist, Peter. On the definition and properties of p-superharmonic functions.. Journal für die reine und angewandte Mathematik, Tome 372 (1986) pp. 67-79. http://gdmltest.u-ga.fr/item/GDZPPN00220326X/