Unusual radio variability in the BL Lac object 0235+164 - Kraus, Adam L.; Quirrenbach, Andreas; Lobanov, A.; Krichbaum, T. P.; Schneider, P.; Wagner, Stefan; Heidt, Jochen; Bock, Holger Arne; Witze, A.; Aller, M.; Aller, H. (BL Lac phenomenon, 1999)