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Information Processing Letters > 2004 > 90 > 2 > 65-72
Journal of Visual Languages and Computing > 2003 > 14 > 6 > 543-589
Information Processing Letters > 2002 > 83 > 4 > 211-220
Information Processing Letters > 2004 > 90 > 2 > 65-72
Journal of Visual Languages and Computing > 2003 > 14 > 6 > 543-589
Information Processing Letters > 2002 > 83 > 4 > 211-220