%0 Journal Article %A Cheng, Sui-Sun %T On a class of fourth order half-linear differential equations %J Czechoslovak Mathematical Journal %D 1980 %P 84-97 %V 30 %N 1 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101658/ %R 10.21136/CMJ.1980.101658 %G en %F 10_21136_CMJ_1980_101658