Completely multiplicative functions arising from simple operations. - Vichian Laohakosol; Nittiya Pabhapote (Int. J. Math. Math. Sci., 2004)

Properties of rational arithmetic functions. - Vichian Laohakosol; Nittiya Pabhapote (Int. J. Math. Math. Sci., 2005)

Ramanujan sums via generalized Möbius functions and applications. - Vichian Laohakosol; Pattira Ruengsinsub; Nittiya Pabhapote (Int. J. Math. Math. Sci., 2006)

Combinatorial Aspects of the Generalized Euler's Totient. - Nittiya Pabhapote; Vichian Laohakosol (Int. J. Math. Math. Sci., 2010)

Group Divisible Designs with Two Associate Classes and λ2=1. - Nittiya Pabhapote; Narong Punnim (Int. J. Math. Math. Sci., 2011)

GDDs with Two Associate Classes and with Three Groups of Sizes 1, n, n and λ 1 < λ 2. - Wannee Lapchinda; Narong Punnim; Nittiya Pabhapote (TJJCCGG, 2012)

GDDs with two associate classes and with three groups of sizes 1, n and n. - Wannee Lapchinda; Narong Punnim; Nittiya Pabhapote (Australas. J Comb., 2014)