Courvoisier, T J. (1995). Multiwavelength monitoring of the BL Lacertae object PKS 2155-304: III.Ground-based observations in 1991 November. The astrophysical journal, 438, .

"Multiwavelength monitoring of the BL Lacertae object PKS 2155-304 : III.Ground-based observations in 1991 November / T.J.-L.Courvoisier, A. Blecha, P. Bouchet, P. Bratschi, M.T. Carini, M. Donahue, R. Edelson, E.D. Feigelson, A.V. Filippenko, I.S. Glass, J. Heidt, R.I. Kollgaard, T. Matheson, H.R. Miller, J.C. Noble, K. Sekiguchi, P.S. Smith, C.M. Urry, S.J. Wagner" The Astrophysical Journal .

Courvoisier, Thierry J.-L. "Multiwavelength Monitoring of the BL Lacertae Object PKS 2155-304: III.Ground-based Observations in 1991 November." The Astrophysical Journal 438 (1995).