Velumani, M. ., P. M. . Paul, M. . Haris, M. . Senthilkumar, A. . Angamuthu, and C. . Joseph. “Characterization of Pure and L-Proline Doped Potassium Nitrate and Sodium Nitrate Crystals”. Trends in Sciences, vol. 19, no. 19, Oct. 2022, p. 6181, doi:10.48048/tis.2022.6181.