Regular solutions of a linear functional equation in the indeterminate case B. Choczewski — 1969 Annales Polonici Mathematici
On differentiable solutions of a functional equation B. Choczewski — 1963 Annales Polonici Mathematici
On continuous solutions of some functional equations of the n-th order B. Choczewski — 1961 Annales Polonici Mathematici
Investigation of the existence and uniqueness of differentiable solutions of a functional equation B. Choczewski — 1964 Annales Polonici Mathematici
On a problem of Lipiński concerning an integral equation B. Choczewski; M. Kuczma — 1972 Colloquium Mathematicae
On the "indeterminate case" in the theory of a linear functional equation B. Choczewski; M. Kuczma — 1966 Fundamenta Mathematicae