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Free quotients of congruence subgroups ofSL 2 over a coordinate ring

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  1. Department of Mathematics, University of Glasgow, G12 8QW, Glasgow, UK

    A. W. Mason

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  1. A. W. Mason
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Mason, A.W. Free quotients of congruence subgroups ofSL 2 over a coordinate ring. Math Z 198, 39–51 (1988). https://doi.org/10.1007/BF01183037

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