@article{AIHPC_2015__32_2_279_0,
     author = {Du, Yihong and Liang, Xing},
     title = {Pulsating semi-waves in periodic media and spreading speed determined by a free boundary model},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {279--305},
     publisher = {Elsevier},
     volume = {32},
     number = {2},
     year = {2015},
     doi = {10.1016/j.anihpc.2013.11.004},
     mrnumber = {3325238},
     zbl = {1321.35263},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2013.11.004/}
}