About oscillation method to study liquid viscosity
  It is shown that the oscillation method to study liquid viscosity of [1-3,7-34] is based on incorrect consideration of one dimensional forced (constrained) )vibrations of plate in viscous liquid, because additional (apparent) mass of liquid and surface forces are incorrectly taken into account, and Archimedes force did not taken into account. It is shown the vibrations cannot be one dimensional, and torsional vibrations need to be take into account, the results obtained with the use of the method are not reliable and incorrect. 
I H Umirzakov
cond-mat.other