@article{DAN_1988_298_6_a15,
     author = {S. S. Aref'ev and N. V. Shebalin},
     title = {Estimation of clustering level of the {Caucasian} earthquakes},
     journal = {Doklady Akademii Nauk},
     pages = {1349--1352},
     publisher = {mathdoc},
     volume = {298},
     number = {6},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_298_6_a15/}
}