MathSciNet bibliographic data MR2350392 (2009f:42019) 42B30 (35J10 42B25 47D03) Czaja, Wojciech; Zienkiewicz, Jacek Atomic characterization of the Hardy space \$H\sp 1\sb L(\Bbb R)\$$H\sp 1\sb L(\Bbb R)$ of one-dimensional Schrödinger operators with nonnegative potentials. Proc. Amer. Math. Soc. 136 (2008), no. 1, 89–94 (electronic). Article

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