TY  - JOUR
T1  - Researches in the Dynamics of a Rigid Body by the Aid of the Theory of Screws. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 21
SP  - 385
EP  - 386
PY  - 1872/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1872.0076
M3  - doi:10.1098/rspl.1872.0076
AU  - Ball, R.
ER  -