I can sympathsize with papers, I am starting work on my graduate thesis.

I used proquest to look the topic up and found that there are articles (with authors listed):

PC World:
"Linux vs. Windows: The Rematch"; Scott Spanbauer; 11.2002
"Fee vs. free software" Eric Dahl; 03.2002

Infowold:
"Don't forget the dollar signs when counting Linux vs. W2K numbers"; Nicholas Petreley; 07.1999

Did not find any books using proquest, amazon.

Hope that helps a little.