PZM!: The inexpensive mic that can do a lot! | Tape Op Magazine | Longform candid interviews with music producers and audio engineers covering mixing, mastering, recording and music production.
Build a PZM Microphone UPDATED! : 6 Steps - Instructables
Realistic PZM Microphone 33-1090 Radio Shack In Box Vintage Pressure Zone | #1872050516
PZM Mic / Boundary Microphone's - Radio Shack version one pair | #480569225
PZM - Realistic PZM - Audiofanzine
Realistic PZM Pressure Zone Microphone Radio Shack for sale online | eBay