Hess, Kathryn
Rational homotopy theory: a brief introduction
Interactions between homotopy theory and algebra / Summer School on Interactions between Homotopy Theory and Algebra, University of Chicago, July 26-August 6, 2004, Chicago, Illinois
175-202
American Mathematical Society
Providence, RI
2007
http://infoscience.epfl.ch/record/129264/files/0604626v2.pdf;