Existence of Multiple Positive Solutions for A Second-order Boundary Value Problem on A Measure Chain
LI Yun-hong,LU Wen-jing,GUO Yang-ping
Journal of Hebei University (Natural Science Edition) . 2008, (5): 462 -465 .  DOI: 10.3969/j.issn.1000-1565.2008.05.005