Keywords: Radio transient sources (2008) ;  Extragalactic radio sources (508) ;  Supernovae (1668) ; Circumstellar matter (241) ;  Radio continuum emission (1340) ;  Very Large Array (1766) ; Radio Astronomy (1338)
1. INTRODUCTION
2. VLA OBSERVATIONS
2.1. Targets
2.2. Observations and Data Reduction
3. RESULTS
4. DISCUSSION
5. CONCLUSIONS