1. Wang, M., Gao, G.: Quantitative sensitive question survey in cluster sampling and its application. In: Recent Advance in Statistics Application and Related Areas, pp. 648–652 (2008)
2. Li, W., Gao, G., He, Z.: Statistical Methods of Two-Stage Sampling on Simmons Model for Sensitive Question Survey with and Its Application. Studies in Mathematical Sciences, 46–51 (2011)
3. He, Z.L., Gao, G., Wang, L.: Multiplication models of quantitative sensitive questions survey in two-stage sampling and its application. In: Data Processing and Quantitative Economy Modeling, pp. 6–10 (2010)
4. Wang, J., Ge, G., Fan, Y., et al.: The estimation of sampling size in multi-stage sampling and its application in medical survey. Applied Mathematics and Computation, 239–249 (2006)
5. Shaul, K.B., Elizabeta, B., Benzion, B.: A two-stage sequential sampling scheme for Warner’s randomized response model. In: Communications in Statistics Theory and Methods, pp. 2373–2387 (2003)