@article{EU_1974-1975__04_a25,
     author = { },
     title = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\'{o} {\ensuremath{\Sigma}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\upsilon}\ensuremath{\rho}\'{o}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\xi}o}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}
},
     pages = {29-29},
     publisher = {mathdoc},
     volume = {04},
     year = {1974-1975},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1974-1975__04_a25/}
}