Battelli, FlavianoFlavianoBattelliPalmer, Kenneth J.Kenneth J.Palmer2012-03-092018-06-282012-03-092018-06-282011http://ntur.lib.ntu.edu.tw//handle/246246/238895en-USA remark about Sil'nikov saddle-focus homoclinic orbitsjournal article10.3934/cpaa.2011.10.817