PZM30 D | High-performance hemispherical boundary layer microphone
PZM Microphones
DIY PZM Microphones Quickly and Inexpensively For High Quality Sound - YouTube
Crown PZM-6D Pressure Zone Microphone
Amazon.com: Listen Technologies TP-PZM TalkPerfect PZM Microphone, Black for use with TP-DX TalkPerfect Duplex Amplifier, for Noisy Client Side Environments, Plastic Material: Electronics
Exploring the Boundaries – A Close Look at an Invisible Microphone | B&H Photo Video Audio
SubZero SZM-B100 Boundary PZM Microphone at Gear4music