Khalifa, Mohamed O., Ahmad M. Yacoub, and Daniel N. Aloi. 2021. “Compact 2x2 and 4x4 MIMO Antenna Systems for 5G Automotive Applications”. Applied Computational Electromagnetics Society Journal (ACES) 36 (06):762-78. https://journals.riverpublishers.com/index.php/ACES/article/view/12089.