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.

Costagliola F., Aalto S., Rodríguez M., Muller S., Spoon H.WW, Martín S., Pérez-Torres M.A, Alberdi A., Lindberg J.E, Batejat F. et al..  2011.  Molecules as tracers of galaxy evolution: an EMIR survey. I. Presentation of the data and first results. Astronomy and Astrophysics. 528:A30.