Last update: Sat Mar 2 02:07:13 MST 2019
@Article{Yang:2005:EPS, author = "Xiaojing Yang", title = "Existence of periodic solutions of planar systems", journal = j-COMPUT-MATH-APPL, volume = "50", number = "3--4", pages = "645--652", month = aug, year = "2005", CODEN = "CMAPDK", ISSN = "0898-1221 (print), 1873-7668 (electronic)", ISSN-L = "0898-1221", bibdate = "Wed Mar 1 21:49:46 MST 2017", bibsource = "http://www.math.utah.edu/pub/tex/bib/computmathappl2000.bib", URL = "http://www.sciencedirect.com/science/article/pii/S0898122105002695", acknowledgement = ack-nhfb, fjournal = "Computers and Mathematics with Applications", journal-URL = "http://www.sciencedirect.com/science/journal/08981221", }