Noh Daudl, M., and G. G. Baling-Kurti. “Variational Calculations of Highly Excited Rovibrational States for the Ground Electronic State of N20”. Malaysian Journal of Science, vol. 27, no. 2, Nov. 2017, pp. 123-30, http://ijie.um.edu.my/index.php/MJS/article/view/9277.