Y. Zolotaryuk and A. V. Zolotaryuk, Tunneling through bilayer heterostructures: Two-point interactions, Low Temp. Phys. 51, 746–750, (2025) [Fiz. Nyzk. Temp. 51, 829–834, (2025)] DOI: https://doi.org/10.1063/10.0036796.