1. 参考文献中作者信息：姓全拼，名缩写。如果作者个数少于4个，要全写出来；作者个数大于等于4个的，可用et al

   在论文中引用时只写作者的姓。同样的，作者个数少于4个，要全写出来；作者个数大于等于4个的，可用et al。

   Example:  In light of these, sparse regression methods with different froms of regularization terms ( Tibshirani, 1996; Zou and Hastie, 2005; Yuan and Lin, 2006), and their variants (Liu et al., 2009; Wang et al., 2011; Zhang and Shen, 2012; Zhou et al., 2012; Zhu et al., 2014; Suk et al., 2015b) have been proposed and demonstrated