TY  - JOUR
T1  - On the Problem of the In- and Circumscribed Triangle. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 19
SP  - 292
EP  - 292
PY  - 1870/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1870.0045
M3  - doi:10.1098/rspl.1870.0045
AU  - Cayley, A.
ER  -