1. Ábrego, B.M., Elekes, Gy., Fernández-Merchant, S.: Structural results for planar sets with many similar subsets. Combinatorica 24, 541–554 (2004)
2. Ábrego, B.M., Fernández-Merchant, S., Llano, B.: An inequality for Kruskal–Macaulay functions. arXiv:0809.3549v1 (2007)
3. Anderson, I.: Combinatorics of finite sets. Dover, Mineola (2002), ISBN 0-486-42257-7, 145 pp. (Corrected reprint of the 1989 edition published by Oxford University Press, Oxford)
4. Brass, P.: Combinatorial geometry problems in pattern recognition. Discrete Comput. Geom. 28, 495–510 (2002)
5. Brass, P.: On the maximum number of unit distances among n points in dimension four. In: Bárány, I., et al. (eds.) Intuitive Geometry. Bolyai Soc. Mathematical Studies, vol. 6, pp. 277–290 (1997)