On the uniqueness of solutions and the convergence of successive approximations in the Darboux problem under the conditions of the Krasnosielski and Krein type B. Palczewski — 1964 Annales Polonici Mathematici
On uniqueness and successive approximations in the Darboux problem for the equation u x y = f ( x , y , u , u x , u y , ∫ 0 x ∫ 0 y g ( x , y , s , t , u ( s , t ) , u s ( s , t ) , u t ( s , t ) ) d s d t ) B. Palczewski — 1965 Annales Polonici Mathematici
On convergence of successive approximations of some generalized contraction mappings A. Miczko; B. Palczewski — 1983 Annales Polonici Mathematici
Some remarks on the uniqueness of solutions of the Darboux problem with conditions of the Krasnosielski-Krein type B. Palczewski; W. Pawelski — 1964 Annales Polonici Mathematici
Sur l’existence et l’unicité des solutions de certaines équations différentielles du type u x y z = f ( x , y , z , u , u x , u y , u z , u x y , u x z , u y z ) M. Kwapisz; B. Palczewski; W. Pawelski — 1961 Annales Polonici Mathematici