MEI, L., HUAI-ZHU, M., QING-DE, S., & QIAN-RONG, L. (2010). The Catalytic Behaviour of Rare Earth Complexes Containing Piperonal Dimethyl Acetal and Dicyclopentadienyl . Asian Journal of Chemistry, 15(1), 259–262. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/21594