@article{KYB_1993__29_6_a2,
     author = {Karcanias, Nicos and Vafiadis, Dimitris},
     title = {On the cover problems of geometric theory},
     journal = {Kybernetika},
     pages = {547--562},
     publisher = {mathdoc},
     volume = {29},
     number = {6},
     year = {1993},
     mrnumber = {1264886},
     zbl = {0821.93026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1993__29_6_a2/}
}