Parsa, Hamid, et al. “Synthesis, Characterization and Using Fe3O4@SiO2@FeCl3 As a New Nanocatalyst for Aza-Michael Reaction Between Amines and Ethyl Crotonate”. Iranian Journal of Catalysis, vol. 10, no. 3, Feb. 2024, https://oiccpress.com/ijc/article/view/3560.