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Citation: Cm. Raiteri et al., Optical and radio variability of the BL Lacertae object AO 0235+16: A possible 5-6 year periodicity, ASTRON ASTR, 377(2), 2001, pp. 396-412

Authors: Henning, T Feldt, M Stecklum, B Klein, R

Citation: T. Henning et al., High-resolution imaging of ultracompact HII regions III. G11.11-0.40 and G341.21-0.21, ASTRON ASTR, 370(1), 2001, pp. 100-111

Authors: Feldt, M Stecklum, B Henning, T Launhardt, R Hayward, TL

Citation: M. Feldt et al., High-resolution imaging of ultracompact HII regions II. G5.89-0.39 revisited, ASTRON ASTR, 346(1), 1999, pp. 243-259