@misc{Pólya_George_(1887–1985)_Exact_1948,
 author={Pólya, George (1887–1985)},
 editor={University of California Press.},
 copyright={Rights Reserved - Restricted Access},
 address={Berkeley},
 address={Los Angeles},
 howpublished={online},
 year={1948},
 publisher={University of California Press},
 language={eng},
 type={Text},
 title={Exact formulas in the sequential analysis of attributes},
}