A biorthogonal system which is not a Toeplitz basis

Authors: Albert Wilansky and Karl Zeller
Journal: Bull. Amer. Math. Soc. 69 (1963), 725-726
DOI: https://doi.org/10.1090/S0002-9904-1963-11003-4
Erratum, volume 69: Bull. Amer. Math. Soc., Volume 70, Number 2 (1964), 327--327
MathSciNet review: 0151819
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