Sadeghi, Bahareh, and Maryam Ghorbani Rad. “Synthesis of 4,4´-(Arylmethylene)bis(1H-Pyrazol-5-Ols) Catalyzed by Nanosilica Supported Perchloric Acid in Water”. Iranian Journal of Catalysis, vol. 4, no. 2, Feb. 2024, https://oiccpress.com/ijc/article/view/3792.