Abstract
The famous Greco theorem (G.H. Greco, Rend. Sem. Mat. Univ. Padova, 66, 21-42, 1982) and our new method of proof lead us to an improvement and another proof of Sugeno-Narukawa-Murofushi's Riesz type integral representation theorem (M. Sugeno et al., Fuzzy Sets and Systems, 99, 205-211, 1998) for comonotonically additive functionals.