@article{BMMS_2013_36_4_a2,
     author = {M. J. Saad and N. Kumaresan and K. Ratnavelu},
     title = {Oscillation {Theorems} for {Second} {Order} {Nonlinear} {Differential} {Equations} with {Damping}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2013},
     volume = {36},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2013_36_4_a2/}
}