1. Abelan, A. B., Seelmann-Eggebert, M., & Bruch, D., et al. (2012). ITMTT. 60,4080
2. Akgiray, A. H.,. Weinreb, S., & Leblanc, R., et al. (2013). ITMTT. 61,3285
3. Cha, E., Wadefalk, N., & Nilsson, P. Å et al. (2018). ITMTT. 66,4860
4. Chen, M. Z., Liu, Q., & Ma, J., et al. (2017a). Science in china: Physics mechanics astronomy. 47,059504
5. Proceedings of 2017 IEEE asia pacific microwave conference;Chen;Kuala Lumpur: APMC,2017