@article{MAIS_2012_19_2_a9,
     author = {E. V. Kuz'min and V. A. Sokolov},
     title = {On verification of {PLC-programs} written in the {LD-language}},
     journal = {Modelirovanie i analiz informacionnyh sistem},
     pages = {138--144},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAIS_2012_19_2_a9/}
}