High-precision determination of universal amplitude ratios for the q=3   Potts model in 2d
  Monte Carlo simulations and series expansion data for the energy, specific heat, magnetization and susceptibility of the 3-state Potts model on the square lattice are analyzed in the vicinity of the critical point in order to estimate universal combinations of critical amplitudes. 
Lev N. Shchur (LITP), Bertrand Berche (LPM), and Paolo Butera (INFN)