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by Cohen, William J.; Steiner, Frederick R.
by Benson, D. J.; Cohen, Frederick R.
by Pavle V. M. Blagojevic; Frederick R. Cohen; Michael C. Crabb; et al.
by Berrick, A. Jon; Cohen, Frederick R.; Hanbury, Elizabeth; et al.
by Aguade, Jaume; Castellet, Manuel; Cohen, Frederick R.
by Barcelona Conference on Algebraic Topology 1990 San Feliu De Guixols; Castellet, Manuel; Cohen, Frederick R.; et al.