SILICA SUPPORTED PERCHLORIC ACID (HCLO4-SIO2) AS ECOFRIENDLY REUSABLE CATALYSTS FOR GREEN SYNTHESIS OF TETRAHYDROBENZO[B]PYRAN DERIVATIVES BY GRINDING METHOD. International Journal of Food and Nutritional Sciences, [S. l.], v. 11, n. 12, p. 3348–3353, 2022. Disponível em: http://www.ijfans.org/index.php/Journal/article/view/13213. Acesso em: 24 aug. 2026.