@article{KUTGS_1981_13_a8,
     author = {B. A. Rozenfel'd and N. I. Kharitonova and I. N. Kashirina},
     title = {Finite geometries with simple, semi-simple and quasi-simple fundamental groups},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {63--70},
     publisher = {mathdoc},
     volume = {13},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1981_13_a8/}
}