[BH82] Brown, R. and Huebschumann, J. (Brown, R. and Thickstun, T. L., Eds.), Identities among relations, in Low-Dimensional Topology, Cambridge University Press, London Math. Soc. Lecture Note Series, 46 (1982), 153–202.
[BS99] Brown, R. and Razak Salleh, A., On the computation of identities among relations and of free crossed resolutions of groups, London Math. Soc. J. Comput. Math., 2 (1999), 28–61.
[Hey99] Heyworth, A.,
Applications of Rewriting Systems and
Groebner Bases to Computing Kan Extensions
and Identities Among Relations,
Ph.D. thesis,
University of Wales, Bangor
(1999)
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http://www.maths.bangor.ac.uk/research/ftp/theses/heyworth.ps.gz
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[HW03] Heyworth, A. and Wensley, C. D. (Campbell, C. M., Robertson, E. F. and Smith, G. C., Eds.), Logged rewriting and identities among relators, in Groups St Andrews 2001 in Oxford, Cambridge University Press, London Math. Soc. Lecture Note Series, 304 (2003), 256–276.
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