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APA Citation
Donatelli, M., Garoni, C., Mazza, M., Serra‐Capizzano, S., & Sesana, D. (n.d.). preconditioned HSS method for large multilevel block Toeplitz linear systems via the notion of matrix‐valued symbol. Numerical linear algebra with applications, 23(1), 83–119. http://access.bl.uk/ark:/81055/vdc_100028051008.0x000006