1. Anders, N.J.: CaTS, a software package for computing state polytopes of toric ideals, available from http://www.soopadoopa.dk/anders/cats/cats.html
2. Blum, S.: Subalgebras of bigraded Koszul algebras. J. Algebra 242(2), 795–809 (2001)
3. Bruns, W., Herzog, J., Vetter, U.: Syzygies and walks. In: Simis, A., Trung, N.V., Valla, G. (eds.) ICTP Proceedings ‘Commutative Algebra’, pp. 36–57. World Scientific, Singapore (1994)
4. Bruns, W., Gubeladze, J., Trung, N.V.: Normal polytopes, triangulations, and Koszul algebras. J. Reine Angew. Math. 485, 123–160 (1997)
5. Conca, A., Herzog, J.: Castelnuovo-Mumford regularity of products of ideals. Preprint