Ibrahem, I., Sundén, H., Rios, R., Zhao, G.-L., & Córdova, A. (2007). One-Pot Pyrrolidine-Catalyzed Synthesis of Benzopyrans, Benzothiopyranes, and Dihydroquinolidines. CHIMIA, 61(5), 219. https://doi.org/10.2533/chimia.2007.219