Reference links from
Applications of Peiffer Pairings in the Moore Complex of a Simplicial Group
J. Baez and J. Dolan,
Higher-dimensional algebra III: n-categories and the algebra of opetopes
(1997)
http://math.ucr.edu/home/baez/
T. Leinster,
General Operads and Multicategories
, preprint, Oct. 1997, Available from
http://www.dpmms.cam.ac.uk/~leinster
TAC Home