[1] M. Behzad G. Chartrand:
Introduction to the Theory of Graphs. Allyn and Bacon, Boston 1971.
MR 0432461
[2] G. Chartrand S. F. Kapoor:
The cube of every connected graph is 1-hamiltonian. J. Res. Nat. Bur. Stand. B 73 (1969), 47-48.
MR 0238729
[4] L. Nebeský E. Wisztová:
Regular factors in powers of connected graphs. Časopis pěst. mat. 106 (1981) 52-59.
MR 0613706