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[1]��ƽ��褵�.ʯ�ҳ��Y��̎ ��ߝ�Ⱥ��׏Uˮ[J].�oˮ��ˮ,��2002,��28��5��42-45.
[2]��.̎��׻��Uˮ��ԇ��о�[J].��I(y��)ˮ ̎��1989,��9��2��22-24.
[3]��܊.��û��ȥ��۹�ˇ�е�� Uˮ[J].��,��2000��19��3��62-64.
[4]�x��t.��ˮÓ�׵Ď׷N��W��[J].�ຣ�h(hu��n) ��,��2002��12��34-36.
[5]��,��.�Uˮ��W��Ó��ͻ��W�� о�[J].2006��16��1��.

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