@article{DAN_1993_331_5_a16,
     author = {K. Ya. Kondrat'ev and C. Varotsos},
     title = {Ozone depletion over {St.} {Petersburg} region as deduced from {Nimbus-7} {TOMS} observations},
     journal = {Doklady Akademii Nauk},
     pages = {622--624},
     publisher = {mathdoc},
     volume = {331},
     number = {5},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_5_a16/}
}