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by Tonti, Enzo
by Abdinazarov, S. (CON); Amonov, B. K. (CON); Ashurova, Z. R. (CON); et al.
by Temme, Nico M.
by Cortés, Vicente; Haupt, Alexander S.
by Vicente Cortés; Alexander S. Haupt
by Andreas Knauf
by Lavrenev, M. M.; Kabanikhin, S. I.
by Thirring, Walter; Harrell, Evans M., II
by Nico M. Temme (Center for Mathematics and Computer Science, Amsterdam, The Netherlands)