Volume 41_3-4_(2020)_189-192

Foreword to special issue celebrating the Umberto Mosco's birthday
Daniele Andreucci, Raffaela Capitanelli, Sandra Carillo, Maria Rosaria Lancia, Maria Agostina Vivaldi

Rend. Mat. Appl. (7) 41 (2020) 189-192;  pdf