General grammar for research writing
http://louisville.edu/faculty/jlwolf02/writing-about-data/Writing_about_data.pdf/at_download/file
http://www.io.com/~hcexres/textbook/twsent.html
http://ocw.mit.edu/OcwWeb/Foreign-Languages-and-Literatures/21F-228Spring-2007/LectureNotes/index.htm
Useful collection of academic phrases in different parts of the paper
http://www.phrasebank.manchester.ac.uk/discussions.htm