%0 Journal Article %A Krejčí, Pavel %T On solvability of equations of the $4$th order with jumping nonlinearities %J Časopis pro pěstování matematiky %D 1983 %P 29-39 %V 108 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1983.118156/ %R 10.21136/CPM.1983.118156 %G en %F 10_21136_CPM_1983_118156