Koyama S., Kino M., Giroletti M., Doi A., Giovannini G., Orienti M., Hada K., Ros E., Niinuma K., Nagai H. et al..  2016.  Discovery of off-axis jet structure of TeV blazar Mrk 501 with mm-VLBI. \aap. 586:A113.

Blasi M.G, Lico R., Giroletti M., Orienti M., Giovannini G., Cotton W., Edwards P.G, Fuhrmann L., Krichbaum T.P, Kovalev Y.Y et al..  2013.  The TeV blazar Markarian 421 at the highest spatial resolution. Astronomy and Astrophysics. 559:A75.

Abramowski A., Acero F., Aharonian F., Akhperjanian A.G, Anton G., Balzer A., Barnacka A., U. de Almeida B, Becherini Y., Becker J. et al..  2012.  The 2010 Very High Energy $\gamma$-Ray Flare and 10 Years of Multi-wavelength Observations of M 87}. The Astrophysical Journal. 746:151.

Aleksi? J., Alvarez E.A, Antonelli L.A, Antoranz P., Asensio M., Backes M., U. de Almeida B, Barrio J.A, Bastieri D., J. González B et al..  2012.  Detection of very-high energy $\gamma$-ray emission from NGC 1275 by the MAGIC telescopes}. Astronomy and Astrophysics. 539:L2.

Lico R., Giroletti M., Orienti M., Giovannini G., Cotton W., Edwards P.G, Fuhrmann L., Krichbaum T.P, Sokolovsky K.V, Kovalev Y.Y et al..  2012.  VLBA monitoring of Mrk 421 at 15 GHz and 24 GHz during 2011. Astronomy and Astrophysics. 545:A117.

Martí-Vidal I., Marcaide J.M, Alberdi A., Pérez-Torres M.A, Ros E., Guirado J.C.  2011.  Detection of jet precession in the active nucleus of M 81. Astronomy and Astrophysics. 533:A111.

Aleksi? J., Antonelli L.A, Antoranz P., Backes M., Barrio J.A, Bastieri D., J. González B, Bednarek W., Berdyugin A., Berger K. et al..  2011.  MAGIC Discovery of Very High Energy Emission from the FSRQ PKS 1222+21. The Astrophysical Journal Letters. 730:L8.