@article{10_1007_s10492_014_0043_9,
     author = {Li, Ying and Shao, Yuanfu},
     title = {Dynamic analysis of an impulsive differential equation with time-varying delays},
     journal = {Applications of Mathematics},
     pages = {85--98},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {2014},
     doi = {10.1007/s10492-014-0043-9},
     mrnumber = {3164578},
     zbl = {06346374},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-014-0043-9/}
}