1. On the propagation of analyticity of solutions of differential equations with constant coefficients,;J. Boman;Ark. Mat.,1964
2. On the intersection of classes of infinitely differentiable functions,;J. Boman;Ark. Mat.,1964
3. Partial regularity of mappings between Euclidean spaces,;J. Boman;Acta Math.,1967
4. Differentiability of a function and of its compositions with functions of one variable,;J. Boman;Math. Scand.,1967
5. Comparison theorems for a generalized modulus of continuity,;J. Boman;Bull. Amer. Math. Soc.,1969