@article{3137,
author = {Smith, B.},
title = {Oscillation and nonoscillation theorems for third order quasi-adjoint difference equations},
journal = {Portugaliae mathematica},
volume = {45},
year = {1988},
pages = {229-243},
zbl = {0665.39002},
mrnumber = {0973159},
language = {en},
url = {http://dml.mathdoc.fr/item/3137}
}
Smith, B. Oscillation and nonoscillation theorems for third order quasi-adjoint difference equations. Portugaliae mathematica, Tome 45 (1988) pp. 229-243. http://gdmltest.u-ga.fr/item/3137/