Kurnosova L.V. , Razorenov L.A. , Fradkin M.I. , Kolobyanina T.N. , Logachev V.I. , Sirotkin I.A. Discovery of radiation anomalies above the south atlantic at heights of 310-340 km. Planetary Space and Science , Vol.9,August , с. P.513-516 , 01.1962