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JAMA. 1982;247(11):1650-1651. doi:10.1001/jama.1982.03320360076054.
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Torgersen WR, Dotter WE:  Comparative roentgenographic study of the asymptomatic and symptomatic lumbar spine . J Bone Joint Surg Am 1976;58:850-853.
Wiltse LL, Widell EH, Jackson DW:  Fatigue fracture: The basic lesion in isthmic spondylolisthesis . J Bone Joint Surg Am 1975;57:17-22.
Montgomery CG:  Preemployment back x-rays . JOM 1976;18:495-498.
Link to Article[[XSLOpenURL/10.1097/00043764-197607000-00011]]
 Guidelines for use of routine x-ray examinations in occupational medicine, Energy Technology Committee of American Occupational Medical Association JOM 1979;21:500-502.
Roffwarg HP (chairman), and the Sleep Disorders Classification Committee:  Diagnostic Classification of Sleep and Arousal Disorders , ed 1, Association of Sleep Disorders Centers. Sleep 1979;2:1-153.


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