Novgorod-Nerevsky

@book{bib_Ellmers_1972_Fruhmittelalterliche,
author={Ellmers, Detlev},
publisher={K. Wachholtz},
title={Frühmittelalterliche Handelsschiffahrt in Mittel-und Nordeuropa},
volume={28}
}

@article{bib_Sorokin_1994_Some,
author={Pjotr Sorokin},
doi={10.1111/j.1095-9270.1994.tb00452.x},
journal={The International journal of nautical archaeology},
number={2},
pages={129--139},
publisher={Routledge},
title={Some results of the study of medieval boatbuilding traditions in north‐west Russia},
volume={23}
}