1. The confusion of fitness;Ariew;British Journal for the Philosophy of Science,2004
2. Do orthologous gene phylogenies really support tree-thinking;Bapteste;BMC Evolutionary Biology,2005
3. Rethinking the propensity interpretation: A peek inside padora’s box;Beatty,1989
4. The propensity interpretation of fitness;Beatty;Philosophy of Science,1979
5. Bouchard, F. (2004). Evolution, fitness and the struggle for persistence. Ph.D. dissertation. Duke University.