SHEAR BAND OBSERVATIONS AND DERIVATIONS OF REQUIREMENTS FOR A SHEAR BAND MODEL L. Seaman, D.R. Curran, D.C. Erlich, T. Cooper and O. Dullum J. Phys. Colloques, 46 C5 (1985) C5-273-C5-282 DOI: 10.1051/jphyscol:1985535