Slawomir Koziel, and Anna Pietrenko-Dabrowska. “Fast Antenna Optimization Using Gradient Monitoring and Variable-Fidelity EM Models”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 35, no. 11, Nov. 2020, pp. 1348-9, https://journals.riverpublishers.com/index.php/ACES/article/view/7545.