@article{10_1007_s10492_011_0035_y,
     author = {Huseynov, Aydin},
     title = {Second order nonlinear differential equations with linear impulse and periodic boundary conditions},
     journal = {Applications of Mathematics},
     pages = {591--606},
     publisher = {mathdoc},
     volume = {56},
     number = {6},
     year = {2011},
     doi = {10.1007/s10492-011-0035-y},
     mrnumber = {2886240},
     zbl = {1249.34097},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-011-0035-y/}
}