$$ \begin{equation} \pi^2=x^2+y \label{eq_lab1} \end{equation} $$ Here we cite this equation by $\eqref{eq_lab1}$
<span style="color:blue">some This is Blue italic. text</span>
*This is 斜体*
**This is 黑体**
Citation from the review paper of G. Vlad [^ref1] and R. Tom [^ref2]. [^ref1]: G. Vlad 1990 RSI paper. [^ref2]: R. Tom 1992 PHP paper.
注意在参考文献列表之间要用回车隔开一行。Bug之处在于markdown还没法识别重复的引用,因此若是屡次引用同一篇文献,在末尾的文献列表中会重复。html