1. T. Nishizeki, N. Chiba, Planar Graphs: Theory and Algorithms, Annals of Discrete Mathematics, Vol. 32, North-Holland, Amsterdam, New York, Oxford, Tokyo, (1988).
2. A common generalization of line graphs and clique graphs;Prisner;J. Graph Theory,1994
3. A characterizations of clique graphs;Roberts;J. Combin. Theory B,1971
4. Recognizing clique Helly graphs;Szwarcfiter;Ars Combin.,1997
5. J.L. Szwarcfiter, A survey on clique graphs, in: C. Linhares, B. Reed (Eds.), Recent Advances in Algorithms and Combinatorics, Springer, Berlin, to appear.