%0 Journal Article %T Problems of the Pc1 magnetospheric wave theory. A review %A Guglielmi, A.V. %A Potapov, A.S. %K ultralow-frequency electromagnetic waves, radiation belt, ion-cyclotron resonator, self-excitation mode %J Solnechno-Zemnaya Fizika %D 2019 %N 5 %P 7 %I INFRA-M Academic Publishing LLC.