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Surfaces with $$p_g = q= 1$$ p g = q = 1 , $$K^2 = 7$$ K 2 = 7 and non-birational bicanonical maps

Crossref DOI link: https://doi.org/10.1007/s10711-014-9990-2

Published Online: 2014-06-18

Published Print: 2015-08

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