Heinz Gröflin, Alan J. Hoffman
Combinatorica
It is shown that, for linear dc networks, in which certain resistors and controlled sources are allowed to vary, the “worst case” occurs when all parameter variations assume extreme values. © 1977, IEEE. All rights reserved.
Heinz Gröflin, Alan J. Hoffman
Combinatorica
Ulrich Faigle, Alan J. Hoffman, et al.
SIAM Journal on Discrete Mathematics
Alan J. Hoffman, Chai Wah Wu
American Mathematical Monthly
Alan J. Hoffman, Carl W. Lee
Discrete and Computational Geometry