@article{00981723, title = {Oscillation criteria for second order linear differential equations with damping.}, journal = {Journal of Applied Analysis}, volume = {2}, year = {1996}, pages = {105-118}, doi = {10.1515/JAA.1996.105}, zbl = {0870.34036}, language = {en}, url = {http://dml.mathdoc.fr/item/00981723} }
Liu, Wei-Ling; Li, Horng-Jaan. Oscillation criteria for second order linear differential equations with damping.. Journal of Applied Analysis, Tome 2 (1996) pp. 105-118. doi : 10.1515/JAA.1996.105. http://gdmltest.u-ga.fr/item/00981723/