@misc{Hammer_Peter_L._(1936–2006)_A_1969,
 author={Hammer, Peter L. (1936–2006) and Rudeanu, Sergiu},
 volume={10},
 editor={Polska Akademia Nauk. Instytut Matematyczny.},
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 address={Wrocław},
 howpublished={online},
 year={1969},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 type={Text},
 title={A pseudo-Boolean viewpoint on systems of representatives},
 keywords={Matematyka -- czasopisma. [KABA], Matematyka -- zastosowania naukowe -- czasopisma. [KABA]},
}