Balkizov, Z. et al. 2020. The first with displacement problem for a third-order parabolic-hyperbolic equation and the effect of inequality of characteristics as data carriers of the Tricomi problem. Bulletin of the Karaganda University. Mathematics Series. 98, 2 (Jun. 2020), 24–39. DOI:https://doi.org/10.31489/2020m2/24-39.