@article{10_4064_ap_29_4_349_356,
     author = {Jan Bochenek},
     title = {Nodes of eigenfunctions of a certain class of ordinary differential equations of the fourth order},
     journal = {Annales Polonici Mathematici},
     pages = {349--356},
     publisher = {mathdoc},
     volume = {29},
     number = {4},
     year = {1974},
     doi = {10.4064/ap-29-4-349-356},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-29-4-349-356/}
}