Authors: Duerbeck, HW Liller, W Sterken, C Benetti, S van Genderen, AM Arts, J Kurk, JD Janson, M Voskes, T Brogt, E Arentoft, T van der Meer, A Dijkstra, R

Citation: Hw. Duerbeck et al., The rise and fall of V4334 Sagittarii (Sakurai's object), ASTRONOM J, 119(5), 2000, pp. 2360-2375

Authors: Sterken, C Arentoft, T Duerbeck, HW Brogt, E

Citation: C. Sterken et al., Light variations of the blue hypergiants HD 168607 and HD 168625 (1973-1999), ASTRON ASTR, 349(2), 1999, pp. 532-536