Barbero, Marco and Gatti, Roberto and Lo Conte, Loredana and Macmillan, Fiona and Coutts, Fiona and Merletti, Roberto (2011) Reliability of surface EMG matrix in locating the innervation zone of upper trapezius muscle. Journal of Electromyography and Kinesiology, 21 (5). pp. 827-33. ISSN 1873-5711