Higgins, P. M. (1992). Techniques of semigroup theory. Oxford University Press.
Čikaški stil citiranjaHiggins, Peter M. Techniques of Semigroup Theory. Oxford [England] ; New York: Oxford University Press, 1992.
MLA način citiranjaHiggins, Peter M. Techniques of Semigroup Theory. Oxford University Press, 1992.
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