@article{Hovatta:20091a, author = "Hovatta, Talvikki and Tornikoski, Merja and Lehto, Harry J. and Nieppola, Elina and Valtaoja, Esko and Lainela, Markku and Torniainen, Ilona and Lahteenmaki, Anne and Aller, M. F. and Aller, H. D.", title = "{Long term radio variability of AGN}", doi = "10.22323/1.063.0041", journal = "PoS", year = 2009, volume = "BLAZARS2008", pages = "041" }