@misc{Hamilton_William_Rowan_(1805–1865)_Second_1931,
 author={Hamilton, William Rowan (1805–1865)},
 copyright={Public Domain},
 journal={Cunningham Memoir},
 address={Cambridge},
 howpublished={online},
 year={1931},
 publisher={University Press},
 language={eng},
 type={Text},
 title={Second Supplement to an Essay on the Theory of Systems of Rays. (1830)},
 URL={http://www.rcin.org.pl/impan/Content/129590/PDF/WA35_158613_11536-1_Art4.pdf},
}