On the modelling of fluid machines as acoustic N-port sources
Lavrentjev, Jüri
Proceedings of International Conference INTER-NOISE 94, Japan, Yokohama, August 1994
1994
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p. 379-382
https://www.ingentaconnect.com/contentone/ince/incecp/1994/00001994/00000006/art00065;jsessionid=cpl3u5bbp88g.x-ic-live-02