Kasprzak, Tomasz. “Application of Groundbreaking Constructivist Theory Methodology in the Analysis of Social Worlds of Deafblind People”. Researching Disability. The Opportunities and Dangers of Theoretical and Methodological Assumptions in Disability Studies, edited by Grzegorz Całek et al., Lodz University Press, 2020, pp. 145-60, https://doi.org/10.18778/8142-757-9.10.