Geritz, S.A.H. <https://pure.iiasa.ac.at/view/iiasa/1281.html>, Kisdi, E. <https://pure.iiasa.ac.at/view/iiasa/1375.html>, Meszena, G., & Metz, J.A.J. <https://pure.iiasa.ac.at/view/iiasa/206.html>  (1996).  Evolutionary Singular Strategies and the Adaptive Growth and Branching of the Evolutionary Tree.   IIASA Working Paper. IIASA, Laxenburg, Austria: WP-96-114