F. Harary

发表

F. Harary, U. Peled, F. Harary, 1987, Discret. Appl. Math..

F. Harary, F. Harary, A. Schwenk, 1972, Canadian Mathematical Bulletin.

F. Harary, F. Harary, D. Cartwright, 1968 .

W. T. Tutte, F. Harary, 1965, Canadian Mathematical Bulletin.