Synthesis and characterization of highly substituted pyrazoles using silica- phosphoric acid nanoparticles as a recoverable heterogeneous solid acid catalyst. Indian Journal of Chemical Technology (IJCT), [S. l.], v. 30, n. 4, p. 476–482, 2023. DOI: 10.56042/ijct.v30i4.66505. Disponível em: https://or.niscpr.res.in/index.php/IJCT/article/view/3949. Acesso em: 14 may. 2026.