A Correction to 'Extended Compatibility Conditions for the Study of Surfaces of Discontinuity in Continuum Mechanics' T. Thomas Indiana University Mathematics Journal 1957 text pdf 10.1512/iumj.1957.6.56052 10.1512/iumj.1957.6.56052 en Indiana Univ. Math. J. 6 (1957) 907 - 908 state-of-the-art mathematics http://iumj.org/access/