M. Lali Sarab, M. Nouri, and A. Tarighat-Esfanjani, “Characteristics of Iranian traditional butter produced in Sarab in comparison with European and national standards”, Progr Nutr, vol. 21, no. 1-S, pp. 416–421, May 2019, doi: 10.23751/pn.v21i1-S.5932.