@article{13812,
  author       = {{Püttmer, A. and Lucklum, R. and Henning, Bernd and Hauptmann, P.}},
  issn         = {{0924-4247}},
  journal      = {{Sensors and Actuators A: Physical}},
  pages        = {{8--12}},
  title        = {{{Improved ultrasonic density sensor with reduced diffraction influence}}},
  doi          = {{10.1016/s0924-4247(97)01720-2}},
  year         = {{2002}},
}