1. Arnab, R. (2004). Optional randomized response techniques for complex designs. Biometrical Journal, 46, 114–124.
2. Arnab, R. (2018). Optional randomized response techniques forquantitative characteristics. Communications in Statistics- Theory and Methods.
3. Boruch, R. F. (1971). Assuring confidentiality of responses in social research: A note on strategies. American Sociologist, 6, 308–311.
4. Chaudhuri, A. (2011a). Randomized response and indirect questioning techniques in surveys. CRC Press.
5. Chaudhuri, A. (2011a). Unequal probability sampling: Analyzing optional randomized response on qualitative and quantitative variables bearing social stigma. In International Statistical Institute Proceedings of the 58th World Statistics Congress, 2011, (pp. 1939–1947). Dublin.