TY - JOUR A1 - Manninen, J. A1 - Kleimenova, N. A1 - Turunen, T. A1 - Gromova, L. T1 - New high-frequency (7–12 kHz) quasi-periodic VLF emissions observed on the ground at L  ∼  5.5 JO - Ann. Geophys. J1 - ANGEO VL - 36 IS - 3 SP - 915 EP - 923 Y1 - 2018/06/21 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/36/915/2018/ L1 - https://angeo.copernicus.org/articles/36/915/2018/angeo-36-915-2018.pdf DO - 10.5194/angeo-36-915-2018 ER -