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Zur Theorie der nichtlinearen Tschebyscheff-Approximation mit Nebenbedingungen Karl-Heinz Hoffmann OriginalPaper Pages: 24 - 41
On some finite element procedures for solving second order boundary value problems Miloš Zlámal OriginalPaper Pages: 42 - 48
Approximation by functions having restricted ranges: Equality case G. D. Taylor OriginalPaper Pages: 71 - 78