Collaboration network patterns and research performance: the case of Korean public research institutions. - Duk Hee Lee; Il Won Seo; Ho Chull Choe; Hee Dae Kim (Scientometrics, 2012)

The evolution of cluster network structure and firm growth: a study of industrial software clusters. - Hee Dae Kim; Duk Hee Lee; Ho Chull Choe; Il Won Seo (Scientometrics, 2014)

The structure and change of the research collaboration network in Korea (2000-2011): network analysis of joint patents. - Ho Chull Choe; Duk Hee Lee (Scientometrics, 2017)