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| 51 | | Nume | Numerical treatment of differential equations [Текст] : Selection of papers presented at the fourth International seminar "NUMDIFF-4" held at the Martin-Luther-univ. Halle-Wittenberg, May 25-29,1987 / Ed. by K.Strehmel. — Leipzig : BSB Teubner, 1988. — 316p. | |
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