Elastic Tensor of YNi_2B_2C
  The complete elastic tensor of YNi_2B_2C was determined by application of the resonant ultrasound spectroscopy technique to a single-crystal sample. Elastic constants were found to be in good agreement with partial results obtained from `time-of-flight' measurements performed on samples cut from the same ingot.   From the measured constants, the bulk modulus and Debye temperature are calculated. 
P.M.C. Rourke, Johnpierre Paglione, F. Ronning, Louis Taillefer, K.   Kadowaki