@misc{Jackson_Dunham_(1888–1946)_The_1930,
 author={Jackson, Dunham (1888–1946)},
 copyright={Public Domain},
 address={New York},
 journal={Colloquium Publications - American Mathematical Society},
 howpublished={online},
 year={1930},
 publisher={American Mathematical Society},
 language={eng},
 title={The theory of approximation},
 type={Text},
 URL={http://rcin.org.pl/Content/81681/PDF/WA35_6802_4364_The-theory.pdf},
 keywords={Teoria aproksymacji [KABA]},
}