@article{Lupal2016development,
author={Lupal, N..},
title={Development of signaling, centralization and blocking devices during the period of industrial capitalism (1861-1900). Part V: Check devices},
journal={Transport automation research},
publisher={FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"},
year={2016},
pages={624-634},
volume={2},
issue={4},
}