Hibi, Takayuki, Kazunori Matsuda, and Akiyoshi Tsuchiya. “Quadratic Gröbner Bases Arising from Partially Ordered Sets”. MATHEMATICA SCANDINAVICA 121, no. 1 (September 22, 2017): 19–25. Accessed April 16, 2024. https://www.mscand.dk/article/view/26246.