Chochkov, R., Denkova, R., Denkova, Z., Denev, P., Vasileva, I., Dessev, T. “Utilization of Industrial Rosa damascena Mill. By-products and Cocoa Pod Husks as Natural Preservatives in Muffins”, Periodica Polytechnica Chemical Engineering, 66(1), pp. 157–166, 2022. https://doi.org/10.3311/PPch.18122