Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Soloviev O. V. and Hayakawa Masashi,3D Modelling Method of VLF Subionospheric Radio Wave Propagation Allowing for a Localized Ionospheric Perturbation,IEEJ Transactions on Fundamentals and Materials,03854205,The Institute of Electrical Engineers of Japan,2004,124,12,1216-1224,https://cir.nii.ac.jp/crid/1390001204593075712,https://doi.org/10.1541/ieejfms.124.1216