Bhenki, Chandrakant, et al. “5-Sulfosalicylic Acid As an Efficient Organocatalyst for Environmentally Benign Synthesis of 2-Substituted Benzimidazoles”. Iranian Journal of Catalysis, vol. 6, no. 5, Feb. 2024, https://oiccpress.com/ijc/article/view/3933.