1. D. Archdeacon, Representativity, in: J.L. Gross and J. Yellen (Eds.), Handbook of Graph Theory, CRC Press, Boca Raton, FL, p. 723
2. by B. Grünbaum in Unsolved Problem 5, page 343;Barnette,1969
3. A method in graph theory;Bondy;Discrete Math.,1976
4. Graph Theory with Applications;Bondy,1976
5. Alternating hamiltonian cycles in two-colored complete bipartite graphs;Chetwynd;J. Graph Theory,1992