Rights and permissions
About this article
Cite this article
≪Journal of Wuhan University (Natural Science Edition)≫ Vol. 50 No. 2, 2004 Abstract. Wuhan Univ. J. Nat. Sci. 9, 395–398 (2004). https://doi.org/10.1007/BF02907900
Issue Date:
DOI: https://doi.org/10.1007/BF02907900