Final Report: NASA ACRP NCC7-7,
Bush Robots, Hans Moravec, Jesse Easudes
Complex-plane-filling number systems are introduced in:
Knuth, Donald E., The Art of Computer Programming, volume 2, Seminumerical Algorithms, Addison Wesley, 1969, page 172.
The idea of tree-structured (dendritic) robots is unexplored. Some lessons can be learned from other configurations with many actuators, especially tentacle or snake-like robots. An excellent reference is:
Shigeo Hirose, Biologically Inspired Robots: snake-like locomotors and manipulators, Oxford University Press, New York, 1993.
Qualitative descriptions of the bush robot idea are found in:
Hans Moravec, Mind Children: the future of robot and human intelligence, Harvard University Press, 1988.
Marvin Minsky, Will Robots Inherit the Earth?, Scientific American, v271n4, October 1994, pp. 108-113.
Fictional portrayals of bush robots are found in
Robert L. Forward, Flight of the Dragonfly, Timescape Books, 1984.
Robert L. Forward, Rocheworld, Baen Books, 1985.
Robert L. Forward and Julie Forward Fuller, Return to Rocheworld, Baen Books, 1990.
Robert L. Forward and Martha D. Forward, Ocean Under the Ice, Baen Books, 1994.
Robert L. Forward and Martha D. Forward, Marooned on Eden, Baen Books, 1995.
Robert L. Forward and Martha D. Forward, Rescued from Paradise, Baen Books, 1995.
Harry Harrison and Marvin Minsky, The Turing Option, Warner Books, 1992.
a very attenuated form of bush robot is seen in the two-level branching of the manipulators on the EVA pods in the film 2001: A Space Odyssey, Stanley Kubrick and Arthur C. Clarke, 1967.