@article{10_21136_CPM_1990_118413,
     author = {Do\v{s}l\'y, Ond\v{r}ej and Osi\v{c}ka, Jan},
     title = {On oscillation criteria for self-adjoint linear differential equation of the fourth order},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {351--359},
     publisher = {mathdoc},
     volume = {115},
     number = {4},
     year = {1990},
     doi = {10.21136/CPM.1990.118413},
     mrnumber = {1090859},
     zbl = {0719.34055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1990.118413/}
}