11.) Pleanmani N., Panma S., Bounds for the dichromatic number of a generalized lexicographic product of digraphs, Discrete Mathematics, Algorithms and Applications, 8, (2016),1650034.
12.) Panma S., Meksawang J., Isomorphism Conditions for Cayley Graphs of Rectangular Groups, Bulletin of the Malaysian Mathematical Sciences Society, 39, (2016),29-41.
13.) Pipattanajinda N., Knauer U., Gyurov B., Panma S., Mazorchuk V., The endomorphism monoids of (n − 3)-regular graphs of order n, Algebra and Discrete Mathematics, 22, (2016),284-300.
14.) Suksumran T., Panma S., On connected cayley graphs of semigroups, Thai Journal of Mathematics, 13, (2015),641-652.
15.) Ruangnai M., Panma S., Arworn S., On Cayley isomorphisms of left and right groups, International Journal of Pure and Applied Mathematics, 80, (2012),561-571.
16.) Panma S., Arworn S., Phongchan S., On cayley isomorphisms of clifford semigroups, International Journal of Pure and Applied Mathematics, 79, (2012),667-682.
17.) Promsakon C., Panma S., Connectedness of endo-cayley digraphs of right(left) zero union of semigroups, International Journal of Pure and Applied Mathematics, 77, (2012),51-61.
18.) Promsakon C., Panma S., Functorial properties of endo-Cayley constructions, Far East Journal of Mathematical Sciences, 51, (2011),1-15.
19.) Panma S., Knauer U., Arworn S., On transitive Cayley graphs of strong semilattices of right (left) groups, Discrete Mathematics, 309, (2009),5393-5403.
20.) Panma S., Na Chiangmai N., Knauer U., Arworn S., Characterizations of Clifford semigroup digraphs, Discrete Mathematics, 306, (2006),1247-1252.