1. K.J. Falconer: The Geometry of Fractal Sets, Cambridge, Cambridge University Press 1985.
2. J.M. Marstrand: Packing Smooth Curves in R
q
, Mathematika 26, 1979, 1–12.
3. Herbert Meschowski: Unsolved and Unsolvable Problems in Geometry, Budapest 1966.
4. C. Stanley Ogilvy: Tomorrow’s Math, Oxford, Oxford University Press 1972.
5. D. J. Ward: A Set of Zero Plane Measure Containing All Finite Polygonal Ares, Canadian Journal of Mathematics 22, 1970, 815–821.