常數時間Fellows, Michael, Parameterized complexity, Berlin, New York: Springer-Verlag, 1999 Du, Ding-Zhu; Ko, Ker-I, Theory of Computational Complexity, John Wiley
計算複雜性理論Michael, Parameterized complexity, Berlin, New York: Springer-Verlag, 1999 [失效連結] Du, Ding-Zhu; Ko, Ker-I, Theory of Computational Complexity, John Wiley