Kohzadian, Alireza, Fathollahi, Rohollah, Karami, Mostafa, Korani, Esmail, Zare, Abdolkarim. La2O3 as a very effective double‌-functional catalyst for the production of 2-amino-4-aryl-4H-pyrans and Pyrazolopyranopyrimidines. Iranian Journal of Catalysis. 2023;13(3):331-340. doi:10.30495/ijc.2023.1990117.2017