1. “Cardinal interpolation and spline functions. IV.” The exponential Euler splines;Schoenberg,1972
2. Cardinal Spline Interpolation;Schoenberg,1973
3. The elementary cases of Landau's problem of inequalities between derivatives;Schoenberg;Amer. Math. Monthly,1973
4. Extremum problems for the motions of a billiard ball. III. The multi dimensional case of König and Szücs;Schoenberg;Studia Sci. Math. Hungar.,1978