1. Gwénolé Ars, Jean-Charles Faugère, Hideki Imai, Mitsuru Kawazoe, and Makoto Sugita, Comparison between XL and Gröbner basis algorithms, Advances in Cryptology—Asiacrypt 2004, Lecture Notes in Comput. Sci., vol. 3329, Springer, Berlin, 2004, pp. 338–353.[MR]
  2. Makoto Sugita, Mitsuru Kawazoe, and Hideki Imai, Relation between the XL algorithm and Groebner basis algorithms, IEICE Trans. Fundamentals E89-A (2006), no. 1, 11–18.