Sheikhhossein E, Ghazanfari D, Nezamabadi V. A new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in water. Iran. J. Catal. 2024 Feb. 3;3(4). Available from: https://oiccpress.com/ijc/article/view/3774