Brandt, Hannelore ; Hauert, Christoph ; Sigmund, Karl. / Punishment and reputation in spatial public goods games. In: Proceedings of the Royal Society of London B: Biological Sciences. 2003 ; Vol. 270, No. 1519. pp. 1099-1104.
Cigler, Johann. / q-Fibonacci polynomials. In: The Fibonacci Quarterly: a journal devoted to the study of integers with special properties. 2003 ; Vol. 41, No. 1. pp. 31-40.
Hoffmann-Ostenhof, Maria ; Hoffmann-Ostenhof, Thomas ; Laptev, Ari. / A geometrical version of hardy's inequality. In: Journal of Functional Analysis. 2002 ; Vol. 189, No. 2. pp. 539-548.