TY - RPRT TI - Clarification of the Hashin-Shtrikman bounds on the effective elastic moduli of polycrystals with hexagonal, trigonal, and tetragonal symmetries AU - J.P. Watt AU - L. Peselnick PY - 1980 DO - 10.1063/1.327804 UR - https://pubs.usgs.gov/publication/70012368 ID - 70012368 ER -