@inproceedings{Frey:2011tE, author = "Frey, Sandor and Paragi, Zsolt", title = "{4C02.27: what is inside a double-double radio quasar?}", doi = "10.22323/1.125.0077", booktitle = "Proceedings of 10th European VLBI Network Symposium and EVN Users Meeting: VLBI and the new generation of radio arrays {\textemdash} PoS(10th EVN Symposium)", year = 2011, volume = "125", pages = "077" }