Siqin, Li, et al. “Rheological Properties of Flaxseed Meal and Soybean Protein Isolate Blend by Extrusion”. International Journal of Agricultural and Biological Engineering, vol. 10, no. 4, July 2017, pp. 224-33, https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/2734.