Yunqing Zhang Yaojun Chen Kemin Zhang The Ramsey numbers for stars of even order versus a wheel of order nine. 1744-1754 2008 29 Eur. J. Comb. 7 http://dx.doi.org/10.1016/j.ejc.2007.07.005 db/journals/ejc/ejc29.html#ZhangCZ08