GAJDA, Robert et al. Food Insecurity in the Households of Polish Elderly: Diversity in the Perception of Its Causes by Demographic and Socioeconomic Characteristics. - Registrovaný: Scopus. In Foods : [Journal of Food Science]. - Basel : MDPI. ISSN 2304-8158, 2022, vol. 11, no. 23, pp. 1-14. (2022 - Current Contents).