| 2019 | GECCO | Push: genetic programming for finite algebras. | Lee Spector, Nicholas Freitag McPhee, David M. Clark, Ian Lindsay, Bradford Barr, Jon Klein |
| 2018 | GECCO | Program synthesis using uniform mutation by addition and deletion. | Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector |
| 2018 | GECCO | Specialization and elitism in lexicase and tournament selection. | Edward R. Pantridge, Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector |
| 2018 | GECCO | Expressive genetic programming: concepts and applications. | Lee Spector, Nicholas Freitag McPhee |
| 2017 | GECCO | Improving generalization of evolved programs through automatic simplification. | Thomas Helmuth, Nicholas Freitag McPhee, Edward R. Pantridge, Lee Spector |
| 2017 | GECCO | Visualizing genetic programming ancestries using graph databases. | Nicholas Freitag McPhee, Maggie M. Casale, Mitchell Finzel, Thomas Helmuth, Lee Spector |
| 2017 | GECCO | Using algorithm configuration tools to optimize genetic programming parameters: a case study. | Nicholas Freitag McPhee, Thomas Helmuth, Lee Spector |
| 2017 | GECCO | On the difficulty of benchmarking inductive program synthesis methods. | Edward R. Pantridge, Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector |
| 2017 | GECCO | Expressive genetic programming: concepts and applications. | Lee Spector, Nicholas Freitag McPhee |
| 2016 | GECCO | The Impact of Hyperselection on Lexicase Selection. | Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector |
| 2016 | GECCO | Effects of Lexicase and Tournament Selection on Diversity Recovery and Maintenance. | Thomas Helmuth, Nicholas Freitag McPhee, Lee Spector |
| 2016 | GECCO | Visualizing Genetic Programming Ancestries. | Nicholas Freitag McPhee, Maggie M. Casale, Mitchell Finzel, Thomas Helmuth, Lee Spector |
| 2016 | GECCO | Expressive Genetic Programming: Concepts and Applications. | Lee Spector, Nicholas Freitag McPhee |
| 2016 | GECCO | Evolution Evolves with Autoconstruction. | Lee Spector, Nicholas Freitag McPhee, Thomas Helmuth, Maggie M. Casale, Julian Oks |
| 2015 | GECCO | Impact of Crossover Bias in Genetic Programming. | Nicholas Freitag McPhee, M. Kirbie Dramdahl, David Donatucci |
| 2009 | EUROGP | Memory with Memory in Tree-Based Genetic Programming. | Riccardo Poli, Nicholas Freitag McPhee, Luca Citi, Ellery Fussell Crane |
| 2009 | FOGA | Free lunches for function and program induction. | Riccardo Poli, Mario Graff, Nicholas Freitag McPhee |
| 2009 | GECCO | Developmental plasticity in linear genetic programming. | Nicholas Freitag McPhee, Ellery Fussell Crane, Sara E. Lahr, Riccardo Poli |
| 2009 | GECCO | Introduction to genetic programming. | Riccardo Poli, Nicholas Freitag McPhee |
| 2008 | EUROGP | Semantic Building Blocks in Genetic Programming. | Nicholas Freitag McPhee, Brian Ohs, Tyler Hutchison |
| 2008 | EUROGP | A Linear Estimation-of-Distribution GP System. | Riccardo Poli, Nicholas Freitag McPhee |
| 2008 | GECCO | Memory with memory: soft assignment in genetic programming. | Nicholas Freitag McPhee, Riccardo Poli |
| 2008 | GECCO | Parsimony pressure made easy. | Riccardo Poli, Nicholas Freitag McPhee |
| 2008 | GECCO | The impact of population size on code growth in GP: analysis and empirical validation. | Riccardo Poli, Nicholas Freitag McPhee, Leonardo Vanneschi |
| 2008 | GECCO | Elitism reduces bloat in genetic programming. | Riccardo Poli, Nicholas Freitag McPhee, Leonardo Vanneschi |
| 2006 | CEC | Emergent Behaviour, Population-based Search and Low-pass Filtering. | Riccardo Poli, Alden H. Wright, Nicholas Freitag McPhee, William B. Langdon |
| 2005 | GECCO | A theoretical analysis of the HIFF problem. | Nicholas Freitag McPhee, Ellery Fussell Crane |
| 2004 | GECCO | On the Strength of Size Limits in Linear Genetic Programming. | Nicholas Freitag McPhee, Alex Jarvis, Ellery Fussell Crane |
| 2002 | GECCO | Using Schema Theory To Explore Interactions Of Multiple Operators. | Nicholas Freitag McPhee, Riccardo Poli |
| 2001 | CEC | A schema theory analysis of mutation size biases in genetic programming with linear representations. | Nicholas Freitag McPhee, Riccardo Poli, Jonathan E. Rowe |
| 2001 | CEC | Exact GP schema theory for headless chicken crossover and subtree mutation. | Riccardo Poli, Nicholas Freitag McPhee |
| 2001 | EUROGP | A Schema Theory Analysis of the Evolution of Size in Genetic Programming with Linear Representations. | Nicholas Freitag McPhee, Riccardo Poli |
| 2001 | EUROGP | Exact Schema Theorems for GP with One-Point and Standard Crossover Operating on Linear Structures and Their Application to the Study of the Evolution of Size. | Riccardo Poli, Nicholas Freitag McPhee |
| 1999 | CEC | AppGP: an alternative structural representation for GP. | Nicholas Freitag McPhee, Nicholas J. Hopper |
| 1994 | CADE | Mechanically Proving Geometry Theorems Using a Combination of Wu's Method and Collins' Method. | Nicholas Freitag McPhee, Shang-Ching Chou, Xiao-Shan Gao |