Piotrowski, Tadeusz (1998). Poland's Holocaust: Ethnic Strife, Collaboration with Occupying Forces and Genocide in the Second Republic, 1918-1947. Science Publications. Jefferson, NC: McFarland. стр. 294. ISBN9780786403714. Приступљено 2017-02-09. „Between 1920 and 1924, some areas of Orawa and Spisz fell to Poland, others to Slovakia. With Germany's support, on the basis of the November 1 and 30, 1938 agreements between Poland and Czechoslovakia, Poland annexed 226 square kilometers (and 4,280 people) of Orawa and Spisz. The following year, on the basis of an agreement (November 21, 1939) between Germany and Slovakia, these territories, along with some previously Polish sections of Orawa and Spisz (a total of 752 square kilometers of land with 30,000 people) were transferred to Slovakia.”