@misc{_Esperanto_1950, copyright={© Copyright by Katolicki Uniwersytet Lubelski Jana Pawła II}, address={Praha}, howpublished={online}, year={1950}, publisher={Instituto de Esperanto-Servo}, language={esp}, title={Esperanto Servo : aktuala informa bulteno de Praha. Vol. 3, Speciala eldono (1950)}, }