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Extremal contractions of three-dimensional algebraic varieties. (Russian) Zbl 0604.14025
This paper is a continuation of investigations of Mori and Kawamata concerning the description of morphisms associated with extremal rays and can be applied to the birational classification of three-dimensional algebraic varieties.

MSC:
14J30 \(3\)-folds
14E05 Rational and birational maps
14C20 Divisors, linear systems, invertible sheaves
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