Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleNonlinear Optical Effects in a System with Degenerate or Closely Spaced Levels in Solids.AuthorsKovarskii, V. A.; Perlin, E. Yu.PublicationPhysica Status Solidi (B), 1969, Vol 36, Issue 2, p793ISSN0370-1972Publication typeArticleDOI10.1002/pssb.19690360243