Verma, R.S., and G.K. Joshi. “Microscopic Behaviour of Hypersensitive Transition Observed in Some Er(III) Doped Systems ”. Asian Journal of Chemistry 13, no. 4 (March 30, 2010): 1673–1675. Accessed November 5, 2024. https://asianpubs.org/index.php/ajchem/article/view/22867.