1. Birkhoff, G., and MacLane, S., 1953, A survey of modern algebra: The MacMillan Co., New York, 472 p.
2. Burns, K. L., Marshall, B., and Gee, R. D., 1969, Computer-assisted geological mapping: Proc. Australas. Inst. Min. Metall., no. 232, p. 41–47.
3. Elmaghraby, S. E., 1971, A graph theoretic interpretation of the sufficiency conditions for the contiguous-binary-switching (CBS)-rule: Naval Research Logistics Quart., v. 18, no. 3, p. 339–344.
4. Smith, F. G., 1966, Geological data processing: Harper & Row, New York, 284 p.
5. Spry, A., 1969, Metamorphic textures: Pergamon Press, London, 350 p.