[1] MIT,DEPT PHYS,RES LAB ELECTR,CAMBRIDGE,MA
[2] OWENS VALLEY RADIO OBSERV,CODE 102-24,PASADENA,CA 91125
[3] SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA
[4] USN,EO HULBURT CTR SPACE RES,RES LAB,WASHINGTON,DC 20375
[5] HARVARD COLL OBSERV,CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138