M. Howard, S. Wane, L. Mihaylova, D. C. Rose, P. Ray, L. Manning, E. Sklar (2023). Training the UK Agri-food Sector to Employ Robotics and Autonomous Systems. EPSRC UK-RAS Network. doi: 10.31256/WP2023.5. ISSN: 2398-4422 (Online), ISSN 2398-4414 (Print)

P. Ray and M. J. Howard, "Robotic Untangling of Herbs and Salads with Parallel Grippers," 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Las Vegas, NV, USA, 2020, pp. 2624-2629, doi: 10.1109/IROS45743.2020.9342536.

Ray, P., Howard, M. J., (2020). Robotic Untangling of Herbs with Parallel Grippers. UKRAS20 Conference: “Robots into the real world” Proceedings, 137-139. doi: 10.31256/Wd8Aj7K

Jeevan Manavalan, Yuchen Zhao, Prabhakar Ray, Hsiu-Chin Lin & Matthew Howard (2020) A library for constraint consistent learning, Advanced Robotics, 34:13, 845-857, doi: 10.1080/01691864.2020.1786723

H. -C. Lin, P. Ray and M. Howard, "Learning task constraints in operational space formulation," 2017 IEEE International Conference on Robotics and Automation (ICRA), Singapore, 2017, pp. 309-315, doi: 10.1109/ICRA.2017.7989039.