The oικετεια of the decree in honour of Protogenes (IPE, I², 32) concerning the dependent population of Olbia in the hellenistic period. (Russ.m.engl.Res.) - - Marchenko, K.K (The Black Sea littoral in the hellenistic times. Materials of the 3rd All-Union Symposium on the Ancient History of the Black Sea Littorial, Tsgaltubo 1982)