@misc{Hamilton_William_Rowan_(1805–1865)_On_1931,
 author={Hamilton, William Rowan (1805–1865)},
 copyright={Public Domain},
 address={Cambridge},
 journal={Cunningham Memoir},
 howpublished={online},
 year={1931},
 publisher={University Press},
 language={eng},
 type={Text},
 title={On the improvement of the double achromatic object glass. (1844)},
 URL={http://rcin.org.pl./Content/129633/PDF/WA35_158724_11536-1_Art22.pdf},
}