Tetens I., Turrini A., Tapanainen H., Christensen T., Lampe J. W., Fagt S., Håkansson N., Lundquist A., Hallund J., and Valsta L. M. “Dietary Intake and Main Sources of Plant Lignans in Five European Countries”. Food & Nutrition Research, June 2013, doi:10.3402/fnr.v57i0.19805.