High-order harmonic generation of N2 molecule in two-color circularly polarized laser fields
Du Hui, Zhang Jun, Ben Shuai, Zhong Hui-Ying, Xu Tong-Tong, Guo Jing, Liu Xue-Shen†,
       

The highest occupied molecular orbital (HOMO) of the N2 molecule using the GAMESS-UK package.