Ruziewicz, Adam, Alexander Kruse, and Zbigniew Gnutek. “Thermodynamic Analysis of A thermoacoustic Travelling Wave Engine”. Journal of Mechanical and Energy Engineering 2, no. 1 (April 26, 2018): 67-74. Accessed January 22, 2021. https://jmee.tu.koszalin.pl/ojs/index.php/jmee/article/view/52.