A radio census of nuclear activity in nearby galaxies -
M.E. Filho, P.D. Barthel, L.C. Ho, 2006, Astron.Ap. 451, 71

GPS radio sources: new optical observations and an updated master list -
A. Labiano, P.D. Barthel et al., 2007, Astron.Ap. 463, 97

Dust tori in radio galaxies -
G. van der Wolk, P.D. Barthel, R.F. Peletier, J.W. Pel, 2010, Astron.Ap. 511, 64

The asymmetric radio structure and record jet of giant quasar 4C34.47 -
S. Hocuk and P.D. Barthel, 2010, Astron.Ap. 523, A9

Extreme host galaxy growth in powerful early-epoch radio galaxies -
Peter Barthel, Martin Haas, Christian Leipski, Belinda Wilkes, 2012, Ap.J. 757, L26

Deep, wide-field, global VLBI observations of the HDF-N and flanking fields -
S. Chi, P.D. Barthel, and M.A. Garrett, 2013, Astron.Ap. 550, A68

The unification of powerful quasars and radio galaxies and their relation to other massive galaxies -
P. Podigachoski, P. Barthel, M. Haas, C. Leipski, and B. Wilkes, 2015, ApJL. 806, L11

Messier 104 - The Sombrero Galaxy

NGC613, NGC1792, NGC3627 - Three Dusty Beauties