The theoretical distribution of the Goodman-Kruskal statistic (abstract only). - Christos Nikolopoulos (ACM Conference on Computer Science, 1987)

On topologically equivalent dendrograms. - Christos Nikolopoulos; Parupalli Prassad (ACM Conference on Computer Science, 1989)

Dendrograms and Irreducible Prefix Codes. - John McAlpin; Christos Nikolopoulos (Great Lakes Computer Science Conference, 1989)

On Expert Database Systems (Abstract). - Chung Chen-Hwa; Christos Nikolopoulos (ACM Conference on Computer Science, 1990)

A Canopy Reflectance Computer Simulation Model. - Christos Nikolopoulos (Applied Informatics, 1994)

A Consumer Complaint Behavior Neural Forecasting Model. - Christos Nikolopoulos; Changok Choi (Applied Informatics, 1994)

A Hybrid Machine Learning System and its Application to Insurance Underwriting. - Christos Nikolopoulos; Shannon Duvendack (International Conference on Evolutionary Computation, 1994)

Using Classifier Systems to Design Neural Nets. - Christos Nikolopoulos (ICTAI, 1994)

Neural Network Based Machinability Evaluation. - Christos Nikolopoulos; Iqbal Shareef; Donald Kalmes (IEA/AIE, 2000)

Robotic agents used to help teach social skills to individuals with autism: The fourth generation. - Matthew F. Tennyson; Deitra A. Kuester; Christos Nikolopoulos (CIR2AT, 2014)

Accessible Robots for Improving Social Skills of Individuals with Autism. - Matthew F. Tennyson; Deitra A. Kuester; John Casteel; Christos Nikolopoulos (J. Artif. Intell. Soft Comput. Res., 2016)