Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{DEME_1980__21_a7, author = {A. D. Tzouvaras}, title = {A {non-Standard} {Characterization} of the norm of free {Ultrafilters}}, journal = {\ensuremath{\Delta}\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\acute\iota}o \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} E\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} E\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma} }, pages = {81-85}, publisher = {mathdoc}, volume = {21}, year = {1980}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/DEME_1980__21_a7/} }
A. D. Tzouvaras. A non-Standard Characterization of the norm of free Ultrafilters. Δελτίο της Ελληνικής Μαθηματικής Εταιρίας , Tome 21 (1980), p. 81-85. http://geodesic.mathdoc.fr/item/DEME_1980__21_a7/