@article{DAN_1997_352_2_a15,
     author = {S. L. Yunga},
     title = {On the classification of seismic moment tensors, based on their},
     journal = {Doklady Akademii Nauk},
     pages = {253--255},
     publisher = {mathdoc},
     volume = {352},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_352_2_a15/}
}