Sterken, C; Manfroid, J; Anton, K; Barzewski, A; Bibo, E; Bruch, A; Burger, M; Duerbeck, H. W; Duemmler, R; Heck, A; Hensberge, H; Hiesgen, M; Inklaar, F; Jorissen, A; Juettner, A; Kinkel, U; Zongli, L; Mekkaden, M. V; Ng, Y. K; Niarchos, P; Puttmann, M; Szeifert, T; Spiller, F; Vandijk, R; Vogt, N; Wanders, I
(European Southern Observatory, 1993-11)