@misc{Pawlik_Bogdan_Permutations_1981,
 author={Pawlik, Bogdan},
 volume={29},
 editor={Polska Akademia Nauk.},
 editor={Państwowe Wydawnictwo Naukowe (1951–1992)},
 number={7-8},
 copyright={Rights Reserved - Restricted Access},
 address={Varsovie},
 howpublished={online},
 year={1981},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 title={Permutations of the nonnegative integers with restictions on the sequence of differences},
 type={Text},
}