TY  - JOUR
T1  - On a Cassegrain Reflector with Corrected Field
JF  - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934)
VL  - 213
SP  - 27
EP  - 66
PY  - 1914/01/01/
UR  - http://dx.doi.org/10.1098/rsta.1914.0002
M3  - doi:10.1098/rsta.1914.0002
AU  - Sampson, R.
ER  -