• Scan & Listen: a simple and fast method to find sources,
  Johan de Vries and Hans-Elias de Bree, SAE Brazil, 2008
  click here for sounds

Papers explaining the vibration measurement with Microflowns:

• The very near field; theory, simulations and measurements,
  H-E de Bree et al., ICSV11, St. Petersburg 2004
• An introduction to Very Near Field Holography,
  H-E. de Bree, V.B. Svetovoy, R. Visser, SAE 2005

The effect of background noise is reduced with vibration measurements using Microflowns:

• A particle velocity sensor to measure the sound from a structure in the presence of background noise,
  H-E. de Bree, W.F. Druyvesteyn, Forum Acousticum 2005
• Near Source Acoustical Particle Velocity Measurements with Ambient Noise,
  J.W. Wind, D.R. Philippens, A. de Boer, IMAC, 2006

Practical cases where VNF measurements are used:

• Impact of test data uncertainties on modal models extracted from multi-patch vibration tests,
  A.Vecchio, L.Valent, L.Bregant, INCE 2005
• Panel Contribution Analysis – An Alternative Window Method,
  O.Wolff and R.Sottek, SAE 2005