Notification of Ministry of Labour and Employment regarding Amendment of Contract Labour (Regulation and Abolition) Act, 1970 by the Gazette of India on October 8, 2004.
Paul, Sudipta(V.V. Giri National Labour Institute, NOIDA, 2005-06)
Project Report on Collection of Oral History of Coal Workers with special Emphasis on Impact of Outsourcing submitted to V.V. Giri National Labour Institute by Sudipta Paul.