... to the question of the nikonov arch

Platonov, Sergey Fedorovich (1860-1933).... to the question of the Nikonov Culture / S.F.Platonov.- St. Petersburg: Type.Imp.Acad.Sciences, 1902. - [2], 10 s.;24. -OTT.From "Izv. R. Rus. and Literature Imp. Acad. Sciences", t. 7 (1902) KN.3, p.24-33..Electronic Source: PB