Issabayev М., Sarsembekov Б. ., Zharkenov Н., Umbetzhanova А. ., and Sarsembekov Е. . “Experimental Study of Exhaust Gas Purification from a Gasoline Engine under Combined Ultrasonic and Laser Radiation Effects”. Bulletin of L.N. Gumilyov Eurasian National University Technical Science and Technology Series, vol. 154, no. 1, Mar. 2026, pp. 185-02, doi:10.32523/2616-7263-2026-154-1-185-202.