MAP20120016170 Chang, Wen-Ruey Comparison of different methods to extract the required coefficient of friction for level walking / Wen-Ruey Chang, Chien-Chi Chang, Simon Matz En: Ergonomics : the international journal of research and practice in human factors and ergonomics. - Oxon [United Kingdom] : Taylor & Francis, 2010- = ISSN 0014-0139. - 01/03/2012 Volumen 55 Número 3 - marzo 2012 I. Chang, Chien-Chi . II. Matz, Simon . III. Title.