Alberto Cabada, Carlos Fernández-Gómez. Constant sign solutions of two-point fourth order problems. Applied Mathematics and Computation, 263:122-133, 2015. [doi]
@article{CabadaF15,
title = {Constant sign solutions of two-point fourth order problems},
author = {Alberto Cabada and Carlos Fernández-Gómez},
year = {2015},
doi = {10.1016/j.amc.2015.03.112},
url = {http://dx.doi.org/10.1016/j.amc.2015.03.112},
researchr = {https://researchr.org/publication/CabadaF15},
cites = {0},
citedby = {0},
journal = {Applied Mathematics and Computation},
volume = {263},
pages = {122-133},
}