Xin Gui Fang George Havas Jie Wang A Family of Non-quasiprimitive Graphs Admitting a Quasiprimitive 2-arc Transitive Group Action. 551-557 1999 20 Eur. J. Comb. 6 http://dx.doi.org/10.1006/eujc.1999.0304 db/journals/ejc/ejc20.html#FangHW99