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Commentationes Mathematicae Universitatis Carolinae
Volume 45
Author: Yi, Sucheol
Song, Seok-Zun; Kang, Kyung-Tae; Yi, Sucheol
:
Perimeter preservers of nonnegative integer matrices
.
(English).
Commentationes Mathematicae Universitatis Carolinae
,
vol. 45 (2004), issue 1
,
pp. 9-15
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