@article{MZM_1979_26_2_a7,
     author = {S. D. Grigoryan},
     title = {Singularities of a~homogeneous anisotropic model of ninth type with the cosmological constant},
     journal = {Matemati\v{c}eskie zametki},
     pages = {235--244},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a7/}
}