Volterra discrete inequalities of Bernoulli type. Choi, Sung Kyu; Koo, Namjip — 2010 Journal of Inequalities and Applications [electronic only]
Almost periodic solutions of nonlinear discrete Volterra equations with unbounded delay. Choi, Sung Kyu; Koo, Namjip — 2008 Advances in Difference Equations [electronic only]
Variationally asymptotically stable difference systems. Choi, Sung Kyu; Goo, Yoon Hoe; Koo, Namjip — 2007 Advances in Difference Equations [electronic only]
h -stability of dynamic equations on time scales with nonregressivity. Choi, Sung Kyu; Goo, Yoon Hoe; Koo, Namjip — 2008 Abstract and Applied Analysis
Stability of linear dynamic systems on time scales. Choi, Sung Kyu; Im, Dong Man; Koo, Namjip — 2008 Advances in Difference Equations [electronic only]
Total stability in nonlinear discrete Volterra equations with unbounded delay. Choi, Sung Kyu; Goo, Yoon Hoe; Im, Dong Man; Koo, Namjip — 2009 Abstract and Applied Analysis