@article{EJDE_2011__2011__a18,
     author = {Muthulakshmi,  Velu and Thandapani,  Ethiraju},
     title = {Interval criteria for oscillation of second-order impulsive differential equation with mixed nonlinearities},
     journal = {Electronic journal of differential equations},
     year = {2011},
     volume = {2011},
     zbl = {1216.34026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a18/}
}