@inproceedings{Kudryavtseva:2009m4,
  author = "Kudryavtseva, Nadezhda",
  title = "{Activity cycles of blazars and quasars from the VLBI observations}",
  doi = "10.22323/1.072.0008",
  booktitle = "Proceedings of The 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting {\textemdash} PoS(IX EVN Symposium)",
  year = 2009,
  volume = "072",
  pages = "008"
}