Petersson CJ, Redlund-Johnell I (February 1984). "The subacromial space in normal shoulder radiographs". Acta Orthopaedica Scandinavica. 55 (1): 57–58. doi:10.3109/17453678408992312. PMID6702430.
Petersson CJ, Redlund-Johnell I (February 1984). "The subacromial space in normal shoulder radiographs". Acta Orthopaedica Scandinavica. 55 (1): 57–58. doi:10.3109/17453678408992312. PMID6702430.