Bounds for the dichromatic number of a generalized lexicographic product of digraphs. - Nopparat Pleanmani; Sayan Panma (Discret. Math. Algorithms Appl., 2016)

Partially composed property of generalized lexicographic product graphs. - Nopparat Pleanmani; Boyko Gyurov; Sayan Panma (Discret. Math. Algorithms Appl., 2017)

Graham's pebbling conjecture holds for the product of a graph and a sufficiently large complete bipartite graph. - Nopparat Pleanmani (Discret. Math. Algorithms Appl., 2019)