用Endnote 软件编辑参考文献后,有三篇文献的顺序似乎不对,由于第一作者和文献时间一样(2007),有两篇文献用a,b表示,但是为什么有另一篇文献把他们分隔开了,难道是第二作者的名也用于字母排序?H在W前我知道,但是后面两篇的姓都是W,第三作者的姓应该是L在Y前的呀,是不是第二作者的名也参与排序了?还是软件设置有问题?这三篇文献如下:Shi, X., Hu, X., Warren, A. & Liu, G. 2007a. Redescription of morphology and morphogenesis of the freshwater ciliate, Pseudokeronopsis similis (Stokes, 1886) Borror et Wicklow, 1983 (Ciliophora: Urostylida). Acta Protozool., 46:41--54. Shi, X., Warren, A., Yu, Y. & Shen, Y. 2004. Infraciliature and myoneme system of Campanella umbellaria (Protozoa, Ciliophora, Peritrichida). J. Morphol., 261:43--51. Shi, X., Wang, W., Liu, G. & Hu, X. 2007b. Morphology of a freshwater peritrichous ciliate, Vorticella convallaria (Protozoa, Ciliophora, Peritrichida). Acta Hydrobiol. Sin., 31:540--543.