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Список литературы
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M. P. F. du Sautoy, J. J. McDermott, G. C. Smith, “Zeta functions of crystallographic groups and analytic continuation”, Proc. London Math. Soc., 79:3 (1999), 511–534 |
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D. M. Goldschmidt, “Automorphisms of trivalent graphs”, Ann. of Math., 111:2 (1980), 377–406 |
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A. Lubotzky, D. Segal, Subgroup growth, Progress in Mathematics, 212, Birkhäuser Verlag, Basel, 2003 |
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A. D. Mednykh, “On the number of subgroups in the fundamental group of a closed surface”, Comm. Algebra, 16:10 (1988), 2137–2148 |
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J.-P. Serre, Trees, Translated from the French by John Stillwell, Springer-Verlag, Berlin–New York, 1980 |
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W. W. Stothers, “Subgroups of finite index in a free product with amalgamated subgroup”, Math. Comp., 36:154 (1981), 653–662 |
