Punniyamoorthy, R., et al. “Studies on Growth, Structural, Luminescence, Linear and Nonlinear Optical Properties of Bisthiourea Lithium Zinc Sulphate Single Crystal for Optoelectronics Applications”. Asian Journal of Chemistry, vol. 37, no. 2, Jan. 2025, pp. 401-6, doi:10.14233/ajchem.2025.33074.