1. Kosicek A., Znidarcic M., Bassanese S.,PAC Proceedings, p 3579 (2009).
2. Hoffmann R. K.,Handjournal of Microwave Integrated Circuits, (1987).
3. Stella A., et al.,DIPAC Proceedings, p 306 (2009).
4. Deibele C., Kurennoy S.,PAC Proceeings, p 2607 (2005).
5. Dehler M.,DIPAC Proceedings, p 286 (2005)