1. Alber, J., Bodlaender, H.L., Fernau, H., Kloks, T., Niedermeier, R.: Fixed Parameter Algorithms for Dominating Set and Related Problems on Planar Graphs. Algorithmica 33, 461–493 (2002)
2. Ausiello, G., Creczenzi, P., Gambosi, G., Kann, V., Marchetti-Spaccamela, A., Protasi, M.: Complexity and Approximation; Combinatorial Optimization Problems and Their Approximability Properties. Springer, Heidelberg (1999)
3. Blank, M.: An Estimate of the External Stability Number of a Graph without Suspended Vertices (in Russian). Prikl. Math. i Programmirovanie Vyp 10, 3–11 (1973)
4. Lecture Notes in Computer Science;J. Chen,2005
5. Downey, R.G., Fellows, M.R.: Parameterized Complexity. Springer, Heidelberg (1999)