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.