TY - JOUR AU - Julia E. Bergner TI - Adding inverses to diagrams encoding algebraic structures JO - Homology, homotopy, and applications PY - 2008 SP - 149 EP - 174 VL - 10 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4310/HHA.2008.v10.n2.a8/ DO - 10.4310/HHA.2008.v10.n2.a8 LA - en ID - HHA_2008_10_2_a8 ER -