Stefanowska K., Woźniak M., Majka J., Sip A., Mrówczyńska L., Kozak W., Dobrucka R., Ratajczak I. 2023. Chitosan films with caffeine and propolis as promising and ecofriendly packaging materials. Applied Sciences-Basel. 13(22): 1-18. doi:10.3390/app132212351