%0 Journal Article %T On reducing the CPU time for simulating of railway automation and remote control systems circuit diagrams in NGSPICE environment %A Novikov, D.V. %K CUSPICE, Spice, circuit simulation, Ngspice algorithm, CPU time, Newton-Raphson method, node admittance matrix, CUSPICE %J Transport automation research %D 2015 %N 1 %P 11 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"