Bügel, S. ., C. . Spagner, S. K. . Poulsen, J. . Jakobsen, and A. . Astrup. “Phylloquinone Content from Wild Green Vegetables May Contribute Substantially to Dietary Intake”. Canadian Journal of Agriculture and Crops, vol. 1, no. 2, Jan. 2017, pp. 83-88, doi:10.20448/803.1.2.83.88.