By Corless R.M.   Jeffery D.J.   in Journal of Symbolic Computation

ISSN:0747-7171|23|5|485-495

Academic Press‎(1997)‎

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By Kolb T. E.   McCormick L. H.   Simons E. E.   Jeffery D. J.   in Forest Science

ISSN:0015-749X|38|2|381-392

Society of American Foresters‎(1992)‎

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