Problems and Results in Combinatorial Analysis and Graph Theory
1968 ◽
Vol 20
◽
pp. 808-841
◽
Keyword(s):
1988 ◽
Vol 72
(1-3)
◽
pp. 81-92
◽
1979 ◽
Vol 319
(1 Second Intern)
◽
pp. 177-187
◽
Keyword(s):
1981 ◽
Vol 128
(3)
◽
pp. 85
◽