File:Amor, F., Ortega, P. et al. 2011. The evolution of worker–queen polymorphism in Cataglyphis ants (10.1007@s00265-011-1157-7)).pdf

Summary
Amor, F., Ortega, P., Jowers, M.J., Cerdá, X., Billen, J., Lenoir, A., Boulay, R.R. 2011. The evolution of worker–queen polymorphism in Cataglyphis ants: interplay between individual- and colony-level selections. Behavioral Ecology and Sociobiology 65, 1473–1482.