For citations:

Grudanov V.Ya., Belokhvostov G.I., Tkacheva L.T. Scientific and Practical Approaches to Improving Noise Muffler Designs of Piston Internal Combustion Engines Based on Theory of Numbers. Science & Technique. 2021;20(5):434-444. (In Russ.) https://doi.org/10.21122/2227-1031-2021-20-5-434-444