R. Klessen, and S. Glover. (2014)cite arxiv:1412.5182Comment: Lecture notes given at the 43rd Saas Fee Advanced School, March 11-16, 2013, Villars-sur-Ollon, Switzerland -- 191 pages, 23 figures. Links to the video recording of the lectures : http://lastro.epfl.ch/conferences/sf2013/videos2.cgi.