@misc{Oversteegen_Lex_G._Internal_1979,
 author={Oversteegen, Lex G.},
 volume={27},
 number={5},
 editor={Polska Akademia Nauk.},
 editor={Państwowe Wydawnictwo Naukowe (1951–1992)},
 copyright={Rights Reserved - Restricted Access},
 address={Varsovie},
 howpublished={online},
 year={1979},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={rus},
 language={eng},
 language={eng},
 type={Text},
 title={Internal characterizations of contractibility for fans},
}