TY  - JOUR
T1  - On the Relation of Cardioids to Ellipses. 
JF  - Abstracts of the Papers Communicated to the Royal Society of London (1843-1854)
VL  - 6
SP  - 267
EP  - 268
PY  - 1850/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1850.0089
M3  - doi:10.1098/rspl.1850.0089
AU  - Jopling, J.
ER  -