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Manoj Siripitukdet. 2001. Semigroups admitting skew-ring or skew-semifield structures. Field of Study Mathematics, Chulalongkorn University;
Manoj Siripitukdet. (2001) Semigroups admitting skew-ring or skew-semifield structures . Chulalongkorn University/Bangkok.
Manoj Siripitukdet. Semigroups admitting skew-ring or skew-semifield structures. . Bangkok:Chulalongkorn University, 2001.
Manoj Siripitukdet. (2001) Semigroups admitting skew-ring or skew-semifield structures . Chulalongkorn University/Bangkok.