BibTeX 참고문헌관리
Commutative Diagrams in TeX http://www.paultaylor.eu/diagrams/
http://mathurl.com/l2w2d5
xypic http://www.jmilne.org/not/Mxymatrix.pdf
[1]http://en.wikibooks.org/wiki/LaTeX/Creating_Graphics
Using LaTeX to Write a PhD Thesis