Fazlinia, A.; Tavakoli, F. H.; Ghashang, M. Bicyclic 1,2,3-Triazolium Ionic Liquids As a Novel Ionic Liquid Based Catalytic Systems for the Preparation of spirobenzo[f]pyrano[3,2-c]chromene Derivatives under Ultrasonic Irradiation Conditions. Iran J Catal 2024, 15 (1 (March 2025), 1-8. https://doi.org/10.57647/j.ijc.2025.1501.06.