Singer, I., & Georgescu, R. (1970). Best approximation in normed linear spaces by elements of linear subspaces. Berlin: Springer-Verlag.
Παραπομπή Chicago StyleSinger, Ivan, and Radu Georgescu. Best Approximation in Normed Linear Spaces By Elements of Linear Subspaces. Berlin: Springer-Verlag, 1970.
Παραπομπή MLASinger, Ivan, and Radu Georgescu. Best Approximation in Normed Linear Spaces By Elements of Linear Subspaces. Berlin: Springer-Verlag, 1970.
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