@article{EUG_1995__44_a5,
     author = {N.K. Stephanidis},
     title = {Neure {Resultate} der {Theorie} der {Strahlensysteme}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {41-50},
     publisher = {mathdoc},
     volume = {44},
     year = {1995},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1995__44_a5/}
}