Problèmes O. Nikodym; Wacław Sierpiński; Kazimierz Zarankiewicz; Alfred Tarski — 1925 Fundamenta Mathematicae
On convex sets in abstract linear spaces where no topology is assumed (Hamel bodies and linear boundedness) D. T. Finkbeiner; O. M. Nikodým — 1954 Rendiconti del Seminario Matematico della Università di Padova