J. Wojtyńska, “Disabled Seniors: Problems with Concept Operationalization”, in Researching Disability. The Opportunities and Dangers of Theoretical and Methodological Assumptions in Disability Studies, G. Całek, J. Niedbalski, and D. Żuchowska-Skiba, Eds. Poland: Lodz University Press, 2020, pp. 255–273. doi: 10.18778/8142-757-9.17.