Zhaocai Hao, Lokenath Debnath. On eigenvalue intervals and eigenfunctions of fourth-order singular boundary value problems. Appl. Math. Lett., 18(5):543-553, 2005. [doi]
@article{HaoD05,
title = {On eigenvalue intervals and eigenfunctions of fourth-order singular boundary value problems},
author = {Zhaocai Hao and Lokenath Debnath},
year = {2005},
doi = {10.1016/j.aml.2004.03.018},
url = {http://dx.doi.org/10.1016/j.aml.2004.03.018},
researchr = {https://researchr.org/publication/HaoD05},
cites = {0},
citedby = {0},
journal = {Appl. Math. Lett.},
volume = {18},
number = {5},
pages = {543-553},
}