The following publications are possibly variants of this publication:
- In-depth! The Silicon Valley Sentinel-Observer's public affairs NetTV program presents: toxic knowledgeRichard G. Epstein. sigcas, 28(2):86-91, 1998. [doi]
- In-depth!: the Sentinel-Observer's public affairs television programRichard G. Epstein. sigcas, 30(1):32-36, 2000. [doi]
- The silicon valley sentinel - observerRichard G. Epstein. sigcas, 29(1):51-52, 1999. [doi]
- The Silicon Valley Sentinel-ObserverRichard G. Epstein. sigcas, 27(2):48, 1997. [doi]
- The Silicon Valley Sentinel-ObserverRichard G. Epstein. sigcas, 27(4):40, 1997. [doi]
- The Silicon Valley Sentinel-ObserverRichard G. Epstein. sigcas, 27(3):48-51, 1997. [doi]