Akbari, Maryam, Javid, Ali, Moeinpour, Farid. “One-pot synthesis of triazolo[1,2-a]indazole-triones catalyzed by a novel magnetically and reusable green catalyst of Preyssler.” Journal of Chemical Reactivity and Synthesis, vol. 7, no. 2, 2017, pp. 1-70.