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Some numerical criteria for contractability of curves on algebraic surfaces
M. Artin
Citation:
M. Artin, “Some numerical criteria for contractability of curves on algebraic surfaces”, Matematika, 9:3 (1965), 3–14; Amer. J. Math., 84 (1962), 485–496
Linking options:
https://www.mathnet.ru/eng/mat359 https://www.mathnet.ru/eng/mat/v9/i3/p3
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