Räsänen, Leena, and Johanna Niinikangas. “Nutrition Survey of Finnish Rural Children: V. Seasonal Differences in Food Consumption and Nutrient Intakes”. Agricultural and Food Science 49, no. 5 (December 1, 1977): 448–455. Accessed April 19, 2024. https://journal.fi/afs/article/view/71948.