Sansanee Nenthein. 2002. Quasi-hyperideals in krasmer hyperrings. Field of Study Mathematics, Chulalongkorn University;
Sansanee Nenthein. (2002) Quasi-hyperideals in krasmer hyperrings . Chulalongkorn University/Bangkok.
Sansanee Nenthein. Quasi-hyperideals in krasmer hyperrings. . Bangkok:Chulalongkorn University, 2002.
Sansanee Nenthein. (2002) Quasi-hyperideals in krasmer hyperrings . Chulalongkorn University/Bangkok.