B. Aduev, G. Belokurov, I. Liskov, D. Nurmukhametov, and Z. Ismagilov, “Ignition of Low-Metamorphized Coal with Continuous Lasers at Wavelengths 450 nm and 808 nm”, Eurasian Chem.-Technol. J., vol. 24, no. 2, pp. 93–101, Jul. 2022.