@inproceedings{tiexiang2012existence,
title={Existence of multiple positive solutions for nonhomogeneous elliptic problems in RN},
author={Tiexiang Li, and Tsung-fang Wu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224205457841338312},
booktitle={Nonlinear Analysis: Theory, Methods & Applications},
volume={75},
number={14},
pages={5639-5652},
year={2012},
}
Tiexiang Li, and Tsung-fang Wu. Existence of multiple positive solutions for nonhomogeneous elliptic problems in RN. 2012. Vol. 75. In Nonlinear Analysis: Theory, Methods & Applications. pp.5639-5652. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224205457841338312.