@article{MR_1984__26_a21,
     author = {George Polya},
     title = {H {M\ensuremath{\acute\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta},} {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\alpha}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} {M\ensuremath{\acute\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}} \ensuremath{\tau}o\ensuremath{\upsilon} {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\nu}.}},
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}
},
     pages = {28-44},
     publisher = {mathdoc},
     volume = {26},
     year = {1984},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1984__26_a21/}
}