Polymerization of styrene: Comment on the papers a contribution to the kinetics of the polymerization of styrene with CF3SO3H as catalyst and measurements on the temperature dependence of the cationic polymerization of styrene in CH2Cl2 with CF3SO3H as catalyst by N. Cardona-Stterlin, polymer bulletin 1, 149 (1978) and 1, 307 (1979)