@article{EU_1973-1974__10_a19,
     author = {\ensuremath{\Gamma}. \ensuremath{\Pi}. T\ensuremath{\sigma}\ensuremath{\acute\alpha}\ensuremath{\mu}\ensuremath{\eta}},
     title = {M\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}
},
     pages = {12-13},
     publisher = {mathdoc},
     volume = {10},
     year = {1973-1974},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1973-1974__10_a19/}
}