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. , , , , , . , FORM FMCDIF. - . -2 . -2 .

, -2:

. . . . , 4 969, . 2; . ., . . -2. ̻, 1970, . 2; Sammet J. . Survey of formula manipulation. Communications of the Association for Gomputing Machinery, 1966, v. 9, 8.

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