@article{bwmeta1.element.desklight-ee1b3622-25c5-4f8b-9c82-9ae5a6cbd52f,
author = {Jan Bochenek},
title = {Oscillation theorems and nodes of eigenfunctions of certain differential equations of the fourth order},
journal = {Annales Polonici Mathematici},
volume = {26},
year = {1972},
pages = {21-28},
zbl = {0244.35006},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-ee1b3622-25c5-4f8b-9c82-9ae5a6cbd52f}
}
Jan Bochenek. Oscillation theorems and nodes of eigenfunctions of certain differential equations of the fourth order. Annales Polonici Mathematici, Tome 26 (1972) pp. 21-28. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-ee1b3622-25c5-4f8b-9c82-9ae5a6cbd52f/