Jonathan, P. and K. C. Ewans, 2011. A spatiodirectional model for extreme waves in the Gulf of Mexico. Journal of Offshore Mechanics and Arctic Engineering, 133 (1), DOI: 10.1115/1.4001949.

Jonathan, P., K. C. Ewans, and J. Flynn, 2011. On the estimation of ocean engineering design contours. ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, 3, Materials Technology; Jan Vugts Symposium on Design Methodology of Offshore Structures; Jo Pinkster Symposium on Second Order Wave Drift Forces on Floating Structures; Johan Wichers Symposium on Mooring of Floating Structures in Waves Rotterdam, The Netherlands, June 19-24, 2011 ISBN: 978-0-7918-4435-9.

Jonathan, P., K. C. Ewans, and D. Randell, 2014. Non-stationary conditional extremes of northern North Sea storm characteristics. Environmetrics, 25 (3), 172 - 188, DOI: 10.1002/env.2262