For citations:
FROLOV V., VOLOBOY A.G., ERSHOV S.V., GALAKTIONOV V.A. The current state of the methods for calculating global illumination in tasks of realistic computer graphics. Proceedings of the Institute for System Programming of the RAS (Proceedings of ISP RAS). 2021;33(2):7-48. (In Russ.) https://doi.org/10.15514/ISPRAS-2021-33(2)-1