D. Shalini, V. R. Ambika, N. Hema, R. Usha, and D. Jayalakshmi, “Structural, Optical and Laser Damage Threshold Studies of Polarizable Organic Crystal: 4-Methylpyridinium Picrate”, ajc, vol. 29, no. 6, pp. 1369–1374, Apr. 2017.