LI, XUE-MEI, FAN ZHANG, LI-PING DU, and SHU-SHENG ZHANG. 2010. “Synthesis and Crystal Structure of Ethyl 4-(4- Nitrobenzamido)-3-(N-Methyl-4-Nitrobenzamido)- Benzoate Monohydrate”. Asian Journal of Chemistry 19 (5):3923-28. https://asianpubs.org/index.php/ajchem/article/view/13297.