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2. Brakke, K. Minimal surfaces and maximal flows. In preparation.
3. Brakke, K. Surface Evolver program. Source code and documentation available via anonymous ftp from geom.umn.edu in the pub directory as evolver.tar. Z. Code is in C, runs on many systems, and should be easily portable to any C system. A printed version of the documentation is available asSurface Evolver Manual, Research Report GCG 31 (1991) from The Geometry Center, 1300 South Second Street, Minneapolis, MN 55454 USA.
4. Federer, H. Geometric Measure Theory. New York: Springer-Verlag 1969.
5. Federer, H. Real flat chains, cochains and variational problems. Indiana Univ. Math. J.24 351–407 (1974).