@inproceedings{aarona,
title={A G_2-period of a Fourier coefficient of an Eisenstein series on E_6},
author={Aaron Pollack, Chen Wan, and Michal Zydor},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20190820235836158830428},
booktitle={Israel Journal of Mathematics, to appear},
}

Aaron Pollack, Chen Wan, and Michal Zydor. A G_2-period of a Fourier coefficient of an Eisenstein series on E_6. In Israel Journal of Mathematics, to appear. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20190820235836158830428.