1.) Seanprom U., Kaewkhao A., Tongsiri N., Kettapun A., A group action on pandiagonal lanna magic squares, Thai Journal of Mathematics, 16, (2018),443-453.
2.) Bussaban L., Kettapun A., Common fixed points of an iterative method for Berinde nonexpansive mappings, Thai Journal of Mathematics, 16, (2018),49-60.
3.) Kettapun A., Kananthai A., Suantai S., A new approximation method for common fixed points of a finite family of asymptotically quasi-nonexpansive mappings in Banach spaces, Computers and Mathematics with Applications, 60, (2010),1430-1439.
4.) Balmforth N.J., Ghadge S.A., Kettapun A., Mandre S.D., Bounds on double-diffusive convection, Journal of Fluid Mechanics, 569, (2006),29-50.
5.) Balmforth N.J., Janaki T.M., Kettapun A., On the bifurcation to moving fronts in discrete systems, Nonlinearity, 18, (2005),2145-2170.