TY JOUR TI Problems of the Pc1 magnetospheric wave theory. A review KW ultralow-frequency electromagnetic waves KW radiation belt KW ion-cyclotron resonator KW self-excitation mode JO Solar-Terrestrial Physics AU Guglielmi, A.V. AU Potapov, A.S. PY 2019 IS 5 PB INFRA-M Academic Publishing LLC.