Thombal,P. R. , and Han,S. S. . "Novel synthesis of Lewis and Bronsted acid sites incorporated CS-Fe3O4@SO3H catalyst and its application in one-pot synthesis of tri(furyl)methane under aqueous media", Biofuel Research Journal, 5, 4, 2018, 886-893. doi: 10.18331/BRJ2018.5.4.3