Knudsen M. D., Carlsen M. H., Hjartåker A., Blomhoff R., and Henriksen H. B. “Reproducibility and Comparison of a Digital Food Frequency Questionnaire (DIGIKOST-FFQ) Assessing Adherence to National Diet and Lifestyle Recommendations”. Food & Nutrition Research, vol. 68, Aug. 2024, doi:10.29219/fnr.v68.10366.