
TY  - JOUR
A1  - Roberts, JA 
A1  - Roger, RS 
A1  - Ribes, J-C 
A1  - Cooke, DJ 
A1  - Murray, JD 
A1  - Cooper, BFC 
A1  - Biraud, F 
T1  - Measurements of the Circular Polarization of Radio Sources at Frequencies of 0·63, 1·4, 5·0 and 8·9 GHz
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1975
VL  - 28
IS  - 3
SP  - 325
EP  - 352
KW  - 
UR  - https://doi.org/10.1071/PH750325 
N2  - Circular polarization measurements were made with the Parkes 64 m telescope on 66 mainly extragalactic sources, 33 of which were studied at two or more frequencies. Circular polarization was definitely found in the eight quasi-stellar sources PKS0237-23, 0537-441, 1127-14, 1226+02 (3C273), 1253-05 (3C279), 2134+004, 2145+06 and 2345-16, as it was measured at the 4u level or higher in at least two observing sessions. 
ER  -

