Fazlinia A, Tavakoli FH, 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 Nov. 25;15(1 (March 2025):1-8. Available from: https://oiccpress.com/ijc/article/view/8245