Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleFocusing and shadowing of ELF signals.AuthorsField, E. C.; Warber, C. R.; Joiner, R. G.PublicationRadio Science, 1986, Vol 21, Issue 3, p511ISSN0048-6604Publication typeArticleDOI10.1029/RS021i003p00511