"History of Electrification". information published by CORE (Central Organization for Railway Electrification). CORE (Central Organization for Railway Electrification). मूल से से 25 दिसंबर 2007 को पुरालेखित।. अभिगमन तिथि: 17 July 2013.
"History of Electrification". information published by CORE (Central Organization for Railway Electrification). CORE (Central Organization for Railway Electrification). मूल से से 25 दिसंबर 2007 को पुरालेखित।. अभिगमन तिथि: 17 July 2013.