@article{DAN_1970_192_4_a20,
     author = {A. P. Tarkov},
     title = {On a possible density decrease in the upper mantle matter},
     journal = {Doklady Akademii Nauk},
     pages = {796--799},
     publisher = {mathdoc},
     volume = {192},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_192_4_a20/}
}