TY - JOUR TI - Bounds on the longitudinal and shear wave attenuation ratio of polycrystalline materials AU - Christopher M. Kube AU - Andrew N. Norris JO - The Journal of the Acoustical Society of America PY - 2017 DO - 10.1121/1.4979980 UR - https://doi.org/10.1121/1.4979980 ER -