Peter Zimmermann

Protective treatment of natural stone. Requirements and limitations with respect to the state of damage

Rolf Snethlage, Eberhard Wendler, Ludwig Sattler, 1992 .

A method of calibrating a multi-channel metering channel and multi-channel metering with automatic channel balancing

Wolfgang Kraemer, Peter Zimmermann, Thomas Moore, 2003 .

Multi-channel metering with automatic calibration

Peter Zimmermann, Torsten Rausch, Gerd Heisse, 2002 .