30 years of multi-wavelength observations of 3C 273 M. Türler, S. Paltani, T.J.-L. Courvoisier, M. F. Aller, H. D. Aller, A. Blecha, P. Bouchet, M. Lainela, I. M. McHardy, E. I. Robson et al. (7 more) Astron. Astrophys. Suppl. Ser., 134 1 (1999) 89-101 Published online: 15 January 1999 DOI: 10.1051/aas:1999125