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"On the Asphericity of Length Four Relative Group Presentations."
Young-Gheel Baik, William A. Bogley, Stephen J. Pride (1997)
- Young-Gheel Baik, William A. Bogley, Stephen J. Pride:
On the Asphericity of Length Four Relative Group Presentations. Int. J. Algebra Comput. 7(3): 277-312 (1997)
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