Sau, V. N., D. X. Khoa, and N. H. Bang. “Intensity Distribution of the 3<SUP>1</SUP>P¬1<SUP>1</SUP>S<SUP>+</SUP> Band System of NaLi”. Communications in Physics, vol. 20, no. 2, Aug. 2012, p. 167, doi:10.15625/0868-3166/20/2/2178.