- Author: Alfred Herbert Fritz Günter Schulze Hans-Dieter Haage Manfred Knipfelberg Klaus-Dieter Kühn Roh
- Language: German
- Year: 2006
- Author: Rüdiger Kramme
- Language: German
- Year: 2006
- Author: Ralf Kirsch Uwe Schmitt
- Language: German
- Year: 2007
- Author: Michael E. Taylor
- Language: English
- Year: 1996
- Author: L.P. Lebedev I.I. Vorovich G.M. Gladwell
- Language: English
- Year: 2003
The Steiner Ratio
djvu
- Author: Dietmar Cieslik
- Language: English
- Year: 2001
- Author: Gregory J. Chaitin
- Language: English
- Year: 1997
- Author: Bela Bollobas
- Language: English
- Year: 1979
- Author: Mark de Berg Marc van Kreveld Mark Overmars Otfried Schwarzkopf
- Language: English
- Year: 1997