1.
OWCZARCZYK A, LAZUREK J. E-SERVICES IN PUBLIC ADMINISTRATION ON THE BASIS OF THE POLISH SOCIAL INSURANCE INSTITUTION (ZUS). MAJ [Internet]. 2021 Nov. 1 [cited 2024 Dec. 22];55(128):19-28. Available from: https://czasopisma.uws.edu.pl/znadministracja/article/view/2353