Triple solutions for a higher-order difference equation. Du, Zengji; Xue, Chunyan; Ge, Weigao — 2005 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Multiple positive solutions for impulsive singular boundary value problems with integral boundary conditions. Li, Meiqiang; Feng, Xianggui; Xue, Chunyan — 2009 International Journal of Open Problems in Computer Science and Mathematics. IJOPCM