By Frenkel S.   in Journal of Historical Geography

ISSN:0305-7488|28|1|85-99

Academic Press‎(2002)‎

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By Gasilova E. R.   Shevelev V. A.   Frenkel S. Ya.   in Liquid Crystals

ISSN:1366-5855|27|5|573-578

Taylor & Francis Ltd‎(2000)‎

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