Parimala Devi, D., et al. “Theoretical Investigation of Intermolecular Dihydrogen Bonds in C2H2···HM and C2H4··&Middot;HM (M = Li, Na and K) Complexes: A DFT and Ab Initio Study”. Asian Journal of Chemistry, vol. 33, no. 8, July 2021, pp. 1811-8, doi:10.14233/ajchem.2021.23252.