Submitted by vladimir on Sun, 2015-03-08 13:03 Publication Type: Journal Article Authors: Voevodsky, V. A.; Kapranov, M. M. Source: Funktsional. Anal. i Prilozhen., Volume 25, p.62–65 (1991) URL:http://dx.doi.org/10.1007/BF01090678 Files: free_n_category_generated_by_a_cube_published.pdf