1. Über Blutkörperzählung;Abbe E.;Jena Z. Med. Naturwiss.,1879
2. Abellanas M. Bajuelos A. Hernández G. Hurtado F. Matos I. andPalop B.(2006).Good illumination of minimum range. arXiv:cs/0606013v1 [cs.CG].
3. Some Problems Related to Good Illumination
4. Proceedings of XII Spanish Workshop on Computational Geometry 2007 M. Abellanas A. Bajuelos I. Matos Variations of good illumination 265 72
5. The embracing Voronoi diagram and closest embracing number