Differential cross sections of positron–hydrogen collisions
Yu Rong-Mei1, Pu Chun-Ying1, Huang Xiao-Yu1, Yin Fu-Rong1, Liu Xu-Yan1, Jiao Li-Guang2, Zhou Ya-Jun3, †,
       

Comparison of the present critical angles in elastic differential cross sections with the prediction of Ghoshal and Mandal.[24]