Vybornov et al. 2022: Periodization and Chronology of the Eneolithic in the Upper and Middle Kama Regions
https://journal.fi/iskos/article/view/113047
Tutkimus jatkuu Kaman myöhäiskivikautisen Garino-Bor-kulttuurin osalta. Sivulla 19:
"The appearance of ceramics with raised wavy cordons and homogeneous ornamentation with a fine-toothed stamp in the late Garino complexes is interconnected with the emerging Seima-Turbino culture community of the region. This phenomenon is reflected in the typological proximity of ceramics with raised wavy cordons of the Kama region with the West Siberian Krotovo wares. The appearance of horizon pottery with raised cordons in the area of distribution of Garino pottery should be considered, along with the Chirkovo complexes of the Mari Volga region, in the framework of the formation of the Seima-Turbino phenomenon in the taiga zone of Eastern Europe."
Eli tässä yhdistetään jo aikoinaan sivuttu kulttuuriketju Ylä-Volgalta Siperiaan eli Chirkovo-Kama-Krotovo, joka näkyy keramiikkaperinteiden yhtäläisyyksissä, Seima-Turbino-verkoston muodostumiseen.