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1998CMP.....1..655H Author Comment Author comment for 1998CMP.....1..655H:

The full text of this article is available at the URL: http://cmp.thphy.uni-duesseldorf.de/zbirnyk.15/017/art17.ps.gz

Author comment submitted 10-Apr-2002 by O. Petruk (petruk@astro.franko.lviv.ua)