Murugadoss, K. and Pasupathi, G. (2015) “Hardness Studies on Solution Grown Lithium Potassium Sulphate Single Crystals – An Inorganic Nonlinear Optical Material”, International Journal of Chemistry and Materials Research, 3(1), pp. 11–16. doi: 10.18488/journal.64/2015.3.1/64.1.11.16.