Regular fourfold coverings with respect to the identity automorphism. - Sungpyo Hong; Jin Ho Kwak (J. Graph Theory, 1993)

Regular graph coverings whose covering transformation groups have the isomorphism extension property. - Sungpyo Hong; Jin Ho Kwak; Jaeun Lee (Discret. Math., 1996)

Isoperimetric numbers and bisection widths of double coverings of a complete graph. - Jin Ho Kwak; Sungpyo Hong; Jaeun Lee; Moo Young Sohn (Ars Comb., 2000)

Linear Discrepancy of the Product of Two Chains. - Sungpyo Hong; Jong-Yoon Hyun; Hyun Kim; Sang-Mok Kim (Order, 2005)

Uniqueness of some optimal superimposed codes. - Sungpyo Hong; Stoyan N. Kapralov; Hyun Kwang Kim; Dong Yeol Oh (Probl. Inf. Transm., 2007)

Off-centered "Walk-on-Spheres" (WOS) algorithm. - Chi-Ok Hwang; Sungpyo Hong; Jinwoo Kim (J. Comput. Phys., 2015)

ICT use level and performance evaluation on the social network environment: Korea case study. - Kyuhwan Lee; Sungpyo Hong; Hangbae Chang (J. Supercomput., 2015)