@misc{Hamilton_William_Rowan_(1805–1865)_Theory_1931, author={Hamilton, William Rowan (1805–1865)}, copyright={Public Domain}, address={Cambridge}, journal={Cunningham Memoir}, howpublished={online}, year={1931}, publisher={University Press}, language={eng}, title={Theory of Systems of Rays. Part First. (1827)*}, type={Text}, URL={http://rcin.org.pl/Content/129583/PDF/WA35_158607_11536-1_Art1.pdf}, }