Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleNovel artificial optical annular structures in the high latitude ionosphere over EISCAT.AuthorsKosch, M. J.; Rietveld, M. T.; Senior, A.; McCrea, I. W.; Kavanagh, A. J.; Isham, B.; Honary, F.PublicationGeophysical Research Letters, 2004, Vol 31, Issue 12, pn/aISSN0094-8276Publication typeArticleDOI10.1029/2004GL019713