Ekkachai Laysirikul. (2019) Isomorphism Theorem for Cayley Graphs of Semigroup of Integer Modulo Prime Power Relative to an Invertible Element. <i>Naresuan University Journal: Science and Technology</i>, <i>27</i>(3), 95-100.Ekkachai Laysirikul. "Isomorphism Theorem for Cayley Graphs of Semigroup of Integer Modulo Prime Power Relative to an Invertible Element". Naresuan University Journal: Science and Technology 27 (2019):95-100.Ekkachai Laysirikul. Isomorphism Theorem for Cayley Graphs of Semigroup of Integer Modulo Prime Power Relative to an Invertible Element. Naresuan University Graduate School:ม.ป.ท. 2019.