The associative operad and the weak order on the symmetric groups.
Page 1
Aguiar, Marcelo, Livernet, Muriel (2007)
Journal of Homotopy and Related Structures
Benoit Fresse (2006)
Annales mathématiques Blaise Pascal
Cheng, Eugenia, Gurski, Nick (2007)
Theory and Applications of Categories [electronic only]
Page 1