Northern sea route

KOPER, Ján - KOVÁČIK, Branislav - KUCHARČÍK, Rudolf. Northern sea route : geopolitical importance. In The handbook of the Arctic : a broad and comprehensive overview. 1. vyd. - Singapur : Palgrave Macmillan, 2022. ISBN 978-981-16-9249-9, pp. 1-14. Dostupné na: https://doi.org/10.1007/978-981-16-9250-5_28-1.