On automorphism groups of some PCS graphs. - Reginaldo M. Marcelo; Mari-Jo P. Ruiz; Ken-ichi Shinoda (Graphs Comb., 1994)

Sigma Coloring and Edge Deletions. - Agnes D. Garciano; Reginaldo M. Marcelo; Mari-Jo P. Ruiz; Mark Anthony C. Tolentino (J. Inf. Process., 2020)

Stars in Forbidden Triples Generating a Finite Set of 4-Connected Graphs. - Orville Buelban; Agnes D. Garciano; Reginaldo M. Marcelo; Ayaka Mori; Shunsuke Nakamura (JCDCGGG, 2022)

Mari-Jo P. Ruiz and Graph Theory. - Agnes D. Garciano; Reginaldo M. Marcelo (JCDCGGG, 2022)

On twin edge colorings in m-ary trees. - Jayson De Luna Tolentino; Reginaldo M. Marcelo; Mark Anthony C. Tolentino (Electron. J. Graph Theory Appl., 2022)

On the Vertex Identification Spectra of Grids. - Reginaldo M. Marcelo; Mark Anthony C. Tolentino; Agnes D. Garciano; Mari-Jo P. Ruiz; Jude C. Buot (J. Interconnect. Networks, 2025)