" 20 (1996) 218. arXiv:q-alg/9503020v2* Landi, G., "An Introduction to Noncommutative Spaces and their Geometries", Lect.
" 20 (1996) 218. arXiv: q-alg/9503020v2* "Landi, G.", An Introduction to Noncommutative Spaces and their Geometries, Lect.