MathSciNet bibliographic data MR2723396 94A12 Mohimani, Hosein; Babaie-Zadeh, Massoud; Jutten, Christian A fast approach for overcomplete sparse decomposition based on smoothed $\ell^0$$\ell^0$ norm. IEEE Trans. Signal Process. 57 (2009), no. 1, 289–301. Article

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