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A. E. Martynyuk, Some approximate methods for solving nonlinear equations with unbounded. operators, Izv. Vyssh. Uchebn. Zaved. Mat. 1966, no. 6 (55), 85–94 (Russian), addendum, ibid. 1967, no. 8 (63), 111. • The year of publication is given in parentheses. • If the paper has not yet appeared in print, the words “to appear” should ... ................
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