@inproceedings{wataru2013fixed,
title={Fixed point theorems for nonlinear non-self mappings in Hilbert spaces and applications},
author={Wataru Takahashi, Ngai-Ching Wong, and Jen-Chih Yao},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020211142737067229},
booktitle={Fixed Point Theory and Applications},
volume={2013},
number={1},
pages={116},
year={2013},
}

Wataru Takahashi, Ngai-Ching Wong, and Jen-Chih Yao. Fixed point theorems for nonlinear non-self mappings in Hilbert spaces and applications. 2013. Vol. 2013. In Fixed Point Theory and Applications. pp.116. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020211142737067229.