@misc{Osborne_George_A._(1839–1927)_Note_1892-1893, author={Osborne, George A. (1839–1927)}, volume={XXII}, editor={Glaisher, James Whitbread Lee (1848–1928)}, copyright={Public Domain}, journal={The Messenger of Mathematics}, address={London ;}, address={Cambridge}, howpublished={online}, year={1892-1893}, publisher={Macmillan and Co.}, language={eng}, language={eng}, title={Note on the numerator of a harmonical progression}, type={Text}, URL={http://www.rcin.org.pl/impan/Content/109086/PDF/WA35_88074_cz294-1893-t22_Art4.pdf}, }