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Some Numerical Criteria for Contractability of Curves on Algebraic Surfaces

Michael Artin
American Journal of Mathematics
Vol. 84, No. 3 (Jul., 1962), pp. 485-496
DOI: 10.2307/2372985
Stable URL: http://www.jstor.org/stable/2372985
Page Count: 12
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Some Numerical Criteria for Contractability of Curves on Algebraic Surfaces
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