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Pathira Ruengsinsup. 1999. Unique factorization of pseudo-arithmetic functions. Program of Mathematics, Chulalongkorn University;
Pathira Ruengsinsup. (1999) Unique factorization of pseudo-arithmetic functions . Chulalongkorn University/Bangkok.
Pathira Ruengsinsup. Unique factorization of pseudo-arithmetic functions. . Bangkok:Chulalongkorn University, 1999.
Pathira Ruengsinsup. (1999) Unique factorization of pseudo-arithmetic functions . Chulalongkorn University/Bangkok.