By Alice M. Dell, Roman L. Weil, Gerald L. Thompson
Communications of the ACM,
February 1971,
Vol. 14 No. 2, Pages 113-117
10.1145/362515.362564
Comments
* This work was supported by the US National Aeronautics and Space Administration, by the National Science Foundation under Grant GS-2703 to the University of Chicago, and by the US Office of Naval Research under Grant NONR 760(24) NR 047-048 to Carnegie-Mellon University. Computations were done on the University of Chicago's Maniac III computer and were supported by the US Atomic Energy Commission under grants AT (11-1)-614 and AT (11-1)-2094.
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