The southwest of the Siret zone as shown overlaps the Rădăuți zone. The former uses the Suceava river as the west boundary, whereas the later has the boundary along the open land beyond the river side villages. The northern part was annexed by the USSR in 1947 following war time soviet control from 1944. Although the wider area suffered deportations of Romanians and mass immigration of Ukrainians and Russians, this area in Ukraine is still over 90% Romanian in these villages.
- Cusiac, Dragoș (2002). Zona Etnografică Siret. Suceava: Centrul Creatiei Populare Suceava.
- Cioara, Maira (1979). Zona Etnografică Rădăuţi. București: Editura Sport Turism.