Afshan Saleem, Noreen Rafi, Sumara Qasim, Nasir Hussain Virk, and Usama Ashraf. “Synthesis of Picric Acid at Domestic Scales”. International Journal of Innovations in Science & Technology, vol. 1, no. 2, Mar. 2019, pp. 62-78, https://journal.50sea.com/index.php/IJIST/article/view/9.