I. Appenzeller et al.: FORS: A Multi-Purpose Instrument for the ESO VLT in: ``ESO Conference on Progress in Telescope and Instrumentation Technologies'', ed. M.H. Ulrich, 1992, p. 577
W. Seifert et al.: FORS - a workhorse instrument for the ESO VLT in: ``Instrumentation in Astronomy VIII'', David L. Crawford, Eric R. Crain, Editors, Proc. SPIE 2198, 213 (1994)
H. Böhnhardt et al.: Design Benchmarks of the FORS Instrument for the ESO VLT in: ``Scientific and engineering frontiers for 8-10 m telescopes. Instrumentation for large telescopes in the 21st century'', eds. M. Iye and T. Nishimura, 1995, p. xx
S. Moehler et al.: The FORS Instrument for the ESO VLT in: ``Calibrating and understanding HST and ESO instruments'', ESO Conference and Workshop Proceedings No. 53, ed. P. Benvenuti, 1995, p. 149 (this paper deals mainly with test and calibration issues of the instrument)
W. Seifert, W. Fürtig, H. Böhnhardt, H. Nicklas: Imaging and Spectroscopy with Focal Reducers in: ``3D Optical Spectroscopic Methods in Astronomy'', ASP Conference Series, Vol. 71, 1995, G. Comte, M. Marcelin eds, p. 18
W. Fürtig, W. Seifert: A Set of Grisms for FORS in: ``3D Optical Spectroscopic Methods in Astronomy'', ASP Conference Series, Vol. 71, 1995, G. Comte, M. Marcelin eds, p. 27
I. Appenzeller et al.: Spectroscopy of Faint Distant Objects with FORS in: ``The Early Universe with the VLT'', ESO Astrophysics Symposia proceedings, 1997, ed. J. Bergeron, p. 35
O. Stahl, W. Seifert, W. Fürtig, H. Böhnhardt, S. Kiesewetter-Köbinger, A. Reeg, H. Nicklas: Spectroscopy with FORS, in: ``Wide-Field Spectroscopy'', E. Kontizas, M.Kontizas, D.H. Morgan and G. Vettolani eds, Proceedings of the 2nd conference of the Working Group of IAU Commission 9 on ``Wide-Field Imaging'' p. 49 (1997)
E. Landi Degl'Innocenti, S. Bagnulo, L. Fossati (2007): Polarimetric Standardization, in The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 999, 2007, C. Sterken, ed, p. XX
L. Fossati, S. Bagnulo, E. Mason, E. Landi Degl'Innocenti (2007): Standard Stars for Linear Polarization Observed with FORS1, in The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 999, 2007, C. Sterken, ed, p. XX
W. Freudling, M. Romaniello, F. Patat, P. Moller, E. Jehin, K. O'Brien (2007): Photometry with FORS at the ESO VLT, in The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 999, 2007, C. Sterken, ed, p. XX (astro-ph/0610705).