V.I. Bogdanov, and V.I. Bogdanov. “Increase of Pulse at Interaction of Gas Masses in the Pulsejet Engine Exhaust Unit”. Global Journal of Science Frontier Research, vol. 14, no. A4, Mar. 2014, pp. 49-57, https://journalofscience.org/index.php/GJSFR/article/view/1111.