@article{03756896,
title = {Qualitative properties of solutions of certain fourth order linear differential equations.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {4},
year = {1981},
pages = {763-774},
doi = {10.1155/S0161171281000598},
zbl = {0482.34021},
language = {en},
url = {http://dml.mathdoc.fr/item/03756896}
}
Taylor, W.E.jun. Qualitative properties of solutions of certain fourth order linear differential equations.. International Journal of Mathematics and Mathematical Sciences, Tome 4 (1981) pp. 763-774. doi : 10.1155/S0161171281000598. http://gdmltest.u-ga.fr/item/03756896/