1. The chromatic number of distance graphs;Deuber,1995
2. Colouring the real line;Eggleton;J. Combin. Theory B,1985
3. Update information to research problem 77;Eggleton;Discrete Math.,1988
4. Couloring prime distance graphs;Eggleton;Graphs Combinatorics,1990
5. Über Matrizen aus nichtnegativen Elementen;Frobenius;Sitzungsberichte Preuss. Akad. Wiss. Berlin,1912