Hall, Marshall
Combinatorial theory
John Wiley & Sons, 1986
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Cohen, Daniel I.A.
Basic techniques of combinatorial theory
John Wiley & Sons, 1978
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Korte, Bernhard
Combinatorial optimization : theory and algorithms
Springer, 2012
 eBooks
Steele, J. Michael
Probability theory and combinatorial optimization
Society for Industrial and Applied Mathematics, 1997
 eBooks
Lallement, Gerard
Semigroups and combinatorial applications
John Wiley & Sons, 1979
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