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Srijan Control Drives is a private sector company that manufactures the electro-mechanical actuation systems for the Nag anti-tank guided missile.
 Srijan Control Drives, srijancontrol.com.
 Dr. N.C. Birla and B.S. Murthy, eds., “Control and Guidance,” Indian Defence Technology: Missile Systems (1998: DRDO, Ministry of Defence, New Delhi), p. 154.