Yu Tian, Daqing Jiang, WeiGao Ge. Multiple positive solutions of periodic boundary value problems for second order impulsive differential equations. Applied Mathematics and Computation, 200(1):123-132, 2008. [doi]
@article{TianJG08,
title = {Multiple positive solutions of periodic boundary value problems for second order impulsive differential equations},
author = {Yu Tian and Daqing Jiang and WeiGao Ge},
year = {2008},
doi = {10.1016/j.amc.2007.10.052},
url = {http://dx.doi.org/10.1016/j.amc.2007.10.052},
researchr = {https://researchr.org/publication/TianJG08},
cites = {0},
citedby = {0},
journal = {Applied Mathematics and Computation},
volume = {200},
number = {1},
pages = {123-132},
}