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1999acm..work....1R Author Comment Author comment for 1999acm..work....1R:

The full text of this article is available from the author's home institution at the URL: http://www.amsmeteors.org/acm99jer.pdf

Author comment submitted 26-Sep-2000 by Jyrki Hänninen (jyrki@deneb.astro.utu.fi)