http://www.freepatentsonline.com/EP0554034A.html

http://ipmb.sinica.edu.tw/microarray/newprotocol/TRI.pdf

http://openwetware.org/wiki/RNA_extraction_using_trizol/tri

http://www.nature.com/nprot/journal/v1/n2/pdf/nprot.2006.83.pdf

http://openwetware.org/wiki/Phenol