Yuqiang Feng. On the existence and multiplicity of positive periodic solutions of a nonlinear third-order equation. Appl. Math. Lett., 22(8):1220-1224, 2009. [doi]
@article{Feng09-4, title = {On the existence and multiplicity of positive periodic solutions of a nonlinear third-order equation}, author = {Yuqiang Feng}, year = {2009}, doi = {10.1016/j.aml.2009.01.034}, url = {http://dx.doi.org/10.1016/j.aml.2009.01.034}, researchr = {https://researchr.org/publication/Feng09-4}, cites = {0}, citedby = {0}, journal = {Appl. Math. Lett.}, volume = {22}, number = {8}, pages = {1220-1224}, }