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Introduction to Commutative Algebra. Addison-Wesley Publishing Company, Reading, Mass.-London-Don Mills, Ont., 1969.
MR 0242802 |
Zbl 0238.13001
[11] West D.B.:
Introduction to Graph Theory. second edition, Prentice Hall, Upper Saddle River, 2001.
MR 1367739 |
Zbl 1121.05304