Costa, L. O. P., Maher, C. G., Latimer, J., Hodges, P. W., & Shirley, D. (2009). An investigation of the reproducibility of ultrasound measures of abdominal muscle activation in patients with chronic non-specific low back pain. Springer-Verlag.

Costa, Leonardo Oliveira Pena, Chris G. Maher, Jane Latimer, Paul W. Hodges, et Debra Shirley. An Investigation of the Reproducibility of Ultrasound Measures of Abdominal Muscle Activation in Patients With Chronic Non-specific Low Back Pain. Springer-Verlag, 2009.

Costa, Leonardo Oliveira Pena, et al. An Investigation of the Reproducibility of Ultrasound Measures of Abdominal Muscle Activation in Patients With Chronic Non-specific Low Back Pain. Springer-Verlag, 2009.