@book{1998xbopisudskisreportonhisexpeditiontotheain,
  title = {B. O. Piłsudski's report on his expedition to the Ainu and Oroks of the island of Sakhalin in the years 1903-1905},
  year = {1998},
  doi = {10.1515/9783110820768-013},
  language = {ain},
  url = {https://doi.org/10.1515/9783110820768-013}
}