Pilipenko, V.A., Vellante, M., Anisimov, S., De Lauretis, M., Fedorov, E.N. and Villante, U. 1998. Multi-component ground-based observation of ULF waves: goals and methods. Annals of Geophysics. 41, 1 (Nov. 1998). DOI:https://doi.org/10.4401/ag-3794.