TY - JOUR T1 - On Newton's Rule for the Discovery of Imaginary Roots of Equations JF - Proceedings of the Royal Society of London (1854-1905) VL - 14 SP - 268 EP - 270 PY - 1865/01/01/ UR - http://dx.doi.org/10.1098/rspl.1865.0049 M3 - doi:10.1098/rspl.1865.0049 AU - Sylvester, J. ER -