Richard Poulin, a well-known Canadian sociologist (University of Ottawa) and researcher on the global sex trade, has been mentioned in Delphyne's post about unions for prostitutes. He just published a book at Sisyphe: Abolir la prostitution - manifeste (Abolishing Prostitution. A Manifesto).
It's in French, unfortunately, but this ought to be as important as Elaine Audet's Prostitution - Perspectives féministes, which I've posted about in this section.