Kósa, D., Ágota Pető, P. Fehér, M. Vecsernyés, I. Bácskay, and Z. Ujhelyi. “Challenges of Oral Protein Administration”. Acta Pharmaceutica Hungarica, vol. 91, no. 3-4, Nov. 2021, pp. 262-3, doi:10.33892/aph.2021.91.262-263.