FitzGerald, D.; Cranitch, M.; Coyle, E.: 'Non-negative tensor factorisation for sound source separation', IET Conference Proceedings, 2005, p. 8-12, DOI: 10.1049/cp:20050279
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1mfrlb4sdrp74.x-iet-live-01content/conferences/10.1049/cp_20050279