Preprints

• Deep PN surveys beyond the Local Group (2004, ESO workshop, invited review, in press)
• Detection, photometry and slitless radial velocities of 535 planetary nebulae in the flattened elliptical galaxy NGC 4697 (2001, ApJ 563, 135)
• Discovery of 9 Ly alpha emitters at redshift z=3.1 using narrow-band imaging and VLT spectroscopy (2000, Ap J, 536, 19)
• Distances from the planetary nebulae luminosity function (1999, in Post-Hipparcos Cosmic Candles, Astrophysics and Space Science Library Vol. 237, eds. A.Heck and F.Caputo, Kluwer, p. 161 (Invited Review)
• Improved simulations of the planetary nebula luminosity function (1997, Astron. Astrophys. 321, 898)
• Winds in the atmospheres of central stars of planetary nebulae (in Procs. of IAU Symp. 180, p. 64)