The 5 references without contexts in paper N. Bezverhnii V., Н. Безверхний В. (2016) “Кольцевые диаграммы с периодическими метками и проблема степенной сопряжённости в группах с условиями C(3)-T(6) // Ring Diagrams with Periodic Labels and Power Conjugacy Problem in Groups with Small Cancellation Conditions C(3)-T (6)” / spz:neicon:technomag:y:2014:i:1:p:238-256

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Novikov P.S. On the algorithmic unsolvability of word identity problem in group theory.Tr. Matematicheskogo in-ta AN SSSR[Proc. of Mathematical Institute of the USSR Academy of Sciences], 1955, vol. 44, pp. 1{144. (in Russian).
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Bezverhnij V.N., Parshikova E.V. The solution of problems of integration in a cyclic subgroup of a group with conditionC(4)-T(4).Algoritmicheskie problemy teorii grupp i polugrupp: mezhvuz. sb. nauch. trudov[Algorithmic problems of the theory of groups and semigroups: interuniversity collection of scientific papers]. Tula, Tolstoi TSPU Publ., 2001, pp. 120{139. (in Russian).
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Parshikova E.V. The problem of weak power conjugacy in groups with conditionC(4)-T(4). Algoritmicheskie problemy teorii grupp i polugrupp: mezhvuz. sb. nauch. trudov[Algorithmic problems of the theory of groups and semigroups: interuniversity collection of scientific papers]. Tula, Tolstoi TSPU Publ., 2001, pp. 179{185. (in Russian).
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Bezverhnij N.V. Okruchenii o i razreshimosti problemy vhozhdenija v ciklicheskuju podgruppu v gruppah s usloviemC(6)[Torsion and solvability of the general word problem for a cyclic subgroup of the group with conditionC(6)]. Moscow, 1995. Dep. VINITI no. 2033-V95. (in Russian).
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Bogley W.A., Pride S.J. Aspherical relative presentations.Proc. of Edinburg Math. Soc. Ser. 2. 1992, vol. 35, no. 1, pp. 1{39. DOI:10.1017/S0013091500005290
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