by Voges, E., Ostwald, O., Schiek, B., Neyer, A.
Published in IEEE journal of quantum electronics (01.01.1982)

by Gaertner, U., Schiek, B., Ostwald, O.
Published in Proceedings of the IEEE (01.01.1986)

by Ostwald, O., Schiek, B.
Published in IEEE transactions on instrumentation and measurement (01.06.1981)

by Ahmed, S.S., Ostwald, O., Schmidt, L.-P.
Published in 2009 IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID (01.09.2009)

by Ostwald, O., Schiek, B., Chaloupka, H.
Published in 1980 10th European Microwave Conference (01.09.1980)