1. Pavel Etingof and Victor Ginzburg, Noncommutative complete intersections and matrix integrals, Pure Appl. Math. Q. 3 (2007), no. 1, part 3, 107–151.[MR/arXiv]
  2. Victor Ginzburg, Calabi-Yau algebras, preprint (2007), 79 pages.[arXiv]