@inproceedings{wei2014automorphic, title={Automorphic period and the central value of Rankin-Selberg L-function}, author={Wei Zhang}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170315102824092857715}, booktitle={J. Amer. Math. Soc}, volume={27}, pages={541-612 }, year={2014}, }