MathSciNet bibliographic data MR1199538 (93k:65104) 65R20 (42C15 45L05) Alpert, Bradley K. A class of bases in \$L\sp 2\$$L\sp 2$ for the sparse representation of integral operators. SIAM J. Math. Anal. 24 (1993), no. 1, 246–262. Article

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