STRUG, Adam and GROCHOWSKI, Piotr. Musical Esperanto awaits us: A conversation between Adam Strug and Piotr Grochowski. Literatura Ludowa. Journal of Folklore and Popular Culture. Online. 7 May 2021. Vol. 65, no. 1, pp. 89-98. [Accessed 30 June 2024]. DOI 10.12775/LL.1.2021.006.