Krylov, Victor V. Effect of layered ground on ground vibrations generated by high-speed trains Effect of layered ground on ground vibrations generated by high-speed trains untagged;Engineering not elsewhere classified 2013-12-11
    https://repository.lboro.ac.uk/articles/chapter/Effect_of_layered_ground_on_ground_vibrations_generated_by_high-speed_trains/9211916