©2013 National Research Council of Thailand
Janyarak Tongsomporn. 2009. Stability of mixed-type trigonometric and quadratic functional equations. Faculty of Science, Chulalongkorn University;
Janyarak Tongsomporn. (2009) Stability of mixed-type trigonometric and quadratic functional equations . Chulalongkorn University/Bangkok.
Janyarak Tongsomporn. Stability of mixed-type trigonometric and quadratic functional equations. . Bangkok:Chulalongkorn University, 2009.
Janyarak Tongsomporn. (2009) Stability of mixed-type trigonometric and quadratic functional equations . Chulalongkorn University/Bangkok.