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- [6] FAMILIES OF SETS ON A FINITE-SET JOURNAL OF THE AUSTRALIAN MATHEMATICAL SOCIETY SERIES A-PURE MATHEMATICS AND STATISTICS, 1984, 37 (DEC): : 405 - 412
- [10] ON THE BOUNDARY OF A FINITE-SET OF POINTS IN THE PLANE COMPUTER GRAPHICS AND IMAGE PROCESSING, 1981, 15 (01): : 93 - 99