@article{EU_1975-1976__3_a8,
     author = { },
     title = {T\ensuremath{\iota} \ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\upsilon}\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 = {19-24},
     publisher = {mathdoc},
     volume = {3},
     year = {1975-1976},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1975-1976__3_a8/}
}