1. A superposition theorem for bounded continuous functions;Demko;Proc. Amer. Math. Soc.,1977
2. On the representation of continuous functions of many variables by superpositions of continuous functions of one variable and addition;Kolmogorov;Dokl. Akad. Nauk SSSR,1957
3. Dimension and superposition of continuous functions;Levin;Israel J. Math.,1990
4. Approximation of Functions;Lorentz,1966
5. Modern Dimension Theory;Nagata,1983