L. Guo, H.Y. Ma, W. Shi, L. L. Zhang, Y. Z. Song, Q. Guo & Y. Q. Li. (2019). Accurate Potential Energy Function and Spectroscopic Properties of NS (X2Π) via Extrapolation to the Complete Basis Set Limit. Journal of Atomic and Molecular Sciences. 8 (2). 88-96. doi:10.4208/jams.052817.081017a