Doktor, K., Vilholm, M. L., Hardardóttir, A., Christensen, H. W., & Lauritsen, J. (2019). European guidelines on quality criteria for diagnostic radiographic images of the lumbar spine – an intra- and inter-observer reproducibility study. Chiropr Man Therap.

Doktor, Klaus, Maria Lind Vilholm, Aldis Hardardóttir, Henrik Wulff Christensen, e Jens Lauritsen. "European Guidelines On Quality Criteria for Diagnostic Radiographic Images of the Lumbar Spine – an Intra- and Inter-observer Reproducibility Study." Chiropr Man Therap 2019.

Doktor, Klaus, et al. "European Guidelines On Quality Criteria for Diagnostic Radiographic Images of the Lumbar Spine – an Intra- and Inter-observer Reproducibility Study." Chiropr Man Therap 2019.