[1] CSIRO,DIV RADIOPHYS,EPPING,NSW 2121,AUSTRALIA
[2] UNIV SYDNEY,SYDNEY,NSW 2006,AUSTRALIA
[3] NUFFIELD RADIO ASTRON LABS,MACCLESFIELD SK11 9DL,CHESHIRE,ENGLAND
[4] UNIV SO CALIF,DEPT ASTRON,LOS ANGELES,CA 90007
[5] DIV NATL MAPPING,BELCONNEN,ACT 2601,AUSTRALIA
[6] UNIV TASMANIA,HOBART,TAS 7001,AUSTRALIA
[7] UNIV NEW S WALES,SCH SURVEYING,KENSINGTON,NSW 2033,AUSTRALIA
[8] FORD AEROSP & COMMUN CORP,SUNNYVALE,CA 94088
[9] AUSTRALIAN NATL UNIV,RES SCH EARTH SCI,CANBERRA,ACT 2601,AUSTRALIA
[10] CSIR,NATL INST TELECOMMUN RES,JOHANNESBURG,SOUTH AFRICA
[11] HAYSTACK OBSERV,NEROC,WESTFORD,MA 01886
[12] ANGLO AUSTRALIAN OBSERV,EPPING,NSW 2121,AUSTRALIA
[13] UNIV CALIF LOS ANGELES,DEPT ASTRON,LOS ANGELES,CA 90024