Sawian Jaidee. 2003. Order-preserving generalized transformation semigroups. Field of Study Mathematics, Chulalongkorn University;
Sawian Jaidee. (2003) Order-preserving generalized transformation semigroups . Chulalongkorn University/Bangkok.
Sawian Jaidee. Order-preserving generalized transformation semigroups. . Bangkok:Chulalongkorn University, 2003.
Sawian Jaidee. (2003) Order-preserving generalized transformation semigroups . Chulalongkorn University/Bangkok.