[1] Li Q. G., Chem. Res. Chinese Universities, 2000, 16(4), 347

[2] Zhang Z. S., Yao K. L., Wu J. G., et al., J. Chinese Rare Earth Society, 1988, 6(2), 13

[3] Marinova V., Kharizanova T., Chem. Abstr., 1982, 96, 157188

[4] Qu J. Q., Wang L. F., Liu Y. Q., et al., Rare Earths, 2006,24(1), 15

[5] Bi C. F., Fan Y. H., Liu S. Q., et al., J. Rare Earths, 2005, 23(Suppl.), 536

[6] Yuan G. Z., Huang J. J., Zhang G. M., Chem. J. Chinese Universities, 1989, 10(1), 5

[7] Zhao H. P., Feng G. H., Acta Pharmacologica Sinica, 1984, 5, 30

[8] Yang X. M., Zhao D. H., Sheng B. H., Acta Pharmacologica Sinica, 1986, 7, 134

[9] Xie Z. Q., J. Wuhan Univ., 1985, 2, 119

[10] Yu H. G., Liu Y., Tan Z. C., et al., Thermochimica Acta, 2003, 401, 217

[11] Rychly R., Pekarek V., J. Chem. Thermodyn., 1977, 9(4), 391

[12] Melaugh R. A., Lau C. C., et al., J. Chem. Thermodyn., 1977, 9(10), 915

[13] Rohatgi K. K., Sen Gupta S. K., J. Inorg. Nucl. Chem., 1970, 32, 2247

[14] Ranter S., Clarke H. T., J. Am. Chem. Soc., 1937, 59, 200

[15] Weast R. C., CRC Hand book of Chemistry and Physics, the 69th Edn., CRC Press Inc., Florida, 1988/1989, D-71

[16] Sabbah R., Le T. H. D., Can. J. Chem., 1993, 71, 1378

[17] Li Q. G., Li X., Den B., Yang X. W., J. Thermal Anal. Calo., 2006, 85, 585