1. A.K. Abbas, R. Bassam, Phonocardiography signal processing. Synth. Lect. Biomed. Eng. 4(1), 1–194 (2009)
2. O. Adam, Segmentation of killer whale vocalizations using the Hilbert-Huang transform. EURASIP J. Adv. Signal Process. ID 245936, 1–10 (2008)
3. L. Aguiar-Conraria, M.J. Soares, The continuous wavelet transform. Technical report, NIPE WP 16/2011 Universidade do Minho, Portugal (2011)
4. T. Alieva, V. Lopez, F. Agullo-Lopez, L.B. Almeida, The fractional Fourier transform in optical propagation problems. J. Modern Opt. 41(5), 1037–1044 (1994)
5. O.A. Alkishriwo, The discrete linear chirp transform and its applications. Ph.D. thesis, University of Pittsburg (2006)