Lower Bounds on Communication Overlap of Networks. - J. W. Hong; Q. Zuo (Theor. Comput. Sci., 1986)

An Optimal Block preventive Maintenance Policy for a Multi-Unit System Considering Imperfect Maintenance. - J. H. Park; S. C. Lee; J. W. Hong; Chang-Hoon Lie (Asia Pac. J. Oper. Res., 2009)