@article{05714018,
title = {Multiplicity of positive solutions for four-point boundary value problems of impulsive differential equations with },
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2010},
year = {2010},
zbl = {1201.34046},
language = {en},
url = {http://dml.mathdoc.fr/item/05714018}
}
Shen, Li; Liu, Xiping; Lu, Zhenhua. Multiplicity of positive solutions for four-point boundary value problems of impulsive differential equations with . Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2010 (2010) . http://gdmltest.u-ga.fr/item/05714018/