%0 Journal Article %A Tripathy, Arun K. %A Santra, Shyam S. %T Necessary and sufficient conditions for oscillation of second-order differential equations with nonpositive neutral coefficients %J Mathematica Bohemica %D 2021 %P 185-197 %V 146 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2020.0063-19/ %R 10.21136/MB.2020.0063-19 %G en %F 10_21136_MB_2020_0063_19