@article{DAN_1990_313_4_a12,
     author = {V. N. Beloborodov},
     title = {A method for optimal estimation of earthquake coordinates},
     journal = {Doklady Akademii Nauk},
     pages = {828--831},
     publisher = {mathdoc},
     volume = {313},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_313_4_a12/}
}