@article{DAN_1997_353_2_a13,
     author = {I. E. Nachasova and K. S. Burakov},
     title = {Geomagnetic field intensity variations for last 4000 years according
},
     journal = {Doklady Akademii Nauk},
     pages = {255--257},
     publisher = {mathdoc},
     volume = {353},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_353_2_a13/}
}