Atallah, M. J.; Manacher, G. K.; and Urrutia, J. "Finding a Minimum Independent Dominating Set in a Permutation Graph." Discr. Appl. Math.21, 177-183, 1988.Brandstadt, A. and Kratsch, D. "On Domination Problems for Permutation and Other Graphs." Theoret. Comput. Sci.54, 181-198, 1987.Harary, F. Graph Theory. Reading, MA: Addison-Wesley, 1994.Skiena, S. Implementing Discrete Mathematics: Combinatorics and Graph Theory with Mathematica. Reading, MA: Addison-Wesley, 1990.