- Hayward J. & Boswell G.P. (2014). Model Behaviour and the Concept of Loop Impact: A Practical Method. System Dynamics Review, 30(1), 29-57. DOI: 10.1002/sdr.1511
- Hayward J. & Roach P.A. (2017). Newton’s Laws as an Interpretive Framework in System Dynamics. System Dynamics Review, 33(3-4), 183-218. DOI: 10.1002/sdr.1586.
- Hayward J. & Roach P.A. (2019). The Concept of Force in Population Dynamics, Physica A: Statistical Mechanics and its Applications, 531, 121736, DOI: 10.1016/j.physa.2019.121736.
- Hayward J. (2012). Model Behavior and the Strengths of Causal Loops: Mathematical Insights and a Practical Method. Presented at the 30th International Conference of the System Dynamics Society, St. Gallen, Switzerland, July 2012.
- Hayward J. (2015). Newton’s Laws of System Dynamics. Presented at the 33rd International Conference of the System Dynamics Society, Cambridge, MA, July 2015.