Mallat, Stephane G. “Multiresolution Approximations and Wavelet Orthonormal Bases of L 2 (R)”. Transactions of the American Mathematical Society, vol. 315, no. 1, 1989, p. 69, https://doi.org/10.2307/2001373.
Mallat, S. G. (1989). Multiresolution Approximations and Wavelet Orthonormal Bases of L 2 (R). Transactions of the American Mathematical Society, 315(1), 69. https://doi.org/10.2307/2001373
Mallat SG. Multiresolution Approximations and Wavelet Orthonormal Bases of L 2 (R). Transactions of the American Mathematical Society. 1989;315(1):69.