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IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS, vol. 6, no. 4, page. 346 - 359, 2000-10
OPTICAL ENGINEERING, vol. 39, no. 9, page. 2413 - 2421, 2000-09
ELECTRONICS LETTERS, vol. 36, no. 8, page. 714 - 716, 2000-04-13
LECTURE NOTES IN COMPUTER SCIENCE, vol. 1811, page. 397 - 406, 2000-01