Authors: KOPPEN J VERGELY JL

Citation: J. Koppen et Jl. Vergely, THE OPACITY OF THE GALACTIC DISC DERIVED WITH PLANETARY-NEBULAE, Monthly Notices of the Royal Astronomical Society, 299(2), 1998, pp. 567-574

Authors: CHEN B VERGELY JL VALETTE B CARRARO G

Citation: B. Chen et al., COMPARISON OF 2 DIFFERENT EXTINCTION LAWS WITH HIPPARCOS OBSERVATIONS, Astronomy and astrophysics (Berlin), 336(1), 1998, pp. 137-149