1. Anghileri L J. On the antitumor activity of gallium and lanthanides. Arzneim-Forsch (Drug Res), 1975, 25(5): 793–795
2. Yang W D, Wang T, Le H Y, Liu J S, Yang Y S. Progress in studies on biological effects of rare earth (in Chinese). Chin Rare Earths, 2000, 21(3): 63–70
3. Fan Y T, Zhu B Z, Li Y, Li C H. Preparation and application of mixed amino acid fertilizer containing rare earth (in Chinese). Chin Rare Earths, 1997, 18(4): 57–59
4. Liu P, Zhang W Y, Li X, Liu Y. Structural basis for the biological effects of Pr(III) ions: Alteration of cell membrane permeability. Biol Trace Elem Res, 2007, 120: 141–147
5. Li H G, Zhang H J, Liu H, Jin T Z. Influence of rare earth on specific rotation of amino acids (in Chinese). Chem J Chin Univ, 1999, 20(2): 190–192