Kumar, Anil, M. P. Singh, Devendra Mohan, and A. K. Gupta. “Determination of Nonlinear Refractive Index of Zinc Phthalocyanine by Pump Induced Fizeau Interferometry”. Defence Science Journal 69, no. 1 (January 10, 2019): 27–30. Accessed July 6, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/12026.