@article{ISU_2010_10_3_a1,
     author = {L. N. Romakina},
     title = {Finite closed 3(4)-loops of extended hyperbolic plane},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {14--26},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2010_10_3_a1/}
}