Yang, Chunhua, Lingzi Zhang, Yang Zheng, and Dequn Sun. “A Practical and Efficient Preparation of Key Intermediates in the Synthesis of Praziquantel”. Asian Journal of Chemistry 25, no. 16 (October 9, 2013): 9415–9416. Accessed June 1, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_17_132.