Ciosek, M., and M. Sajka. “Anna Sierpinska (1947-2023) - Outstanding Researcher in Mathematics Education”. Annales Universitatis Paedagogicae Cracoviensis | Studia Ad Didacticam Mathematicae Pertinentia, vol. 16, Dec. 2024, pp. 117-34, doi:10.24917/20809751.16.8.