@article{CHEB_2015_16_2_a12,
     author = {L. N. Romakina},
     title = {Classification of tetrahedrons with not hyperbolic sides in a hyperbolic space of positive curvature},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {208--221},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2015_16_2_a12/}
}