Coincidence Points of Weaker Contractions in Partially Ordered Metric Spaces. - Kuo-Ching Jen; Ing-Jer Lin; Chi-Ming Chen (J. Appl. Math., 2013)

A Postverification Method for Solving Forced Duffing Oscillator Problems without Prescribed Periods. - Hong-Yen Lin; Chien-Chang Yen; Kuo-Ching Jen; Kang C. Jea (J. Appl. Math., 2014)