1. Abe, S. (1971). Simplified linear unbiased estimators for location and scale parameters in doubly censored samples-1; Basic Analysis,Rep. Stat. Appl. Res., JUSE, 18, No. 2.
2. Abe, S. (1971). Simplified linear unbiased estimators for location and scale parameters in doubly censored samples-2; Application to normal distribution.Rep. Stat. Appl. Res., JUSE,18, No. 3.
3. Andrews, D.F., Bickel, P.J., Hampel, F.R.; Huber, P.J., Rogers, W.H., Tukey J.W. (1972).Robust Estimates of Location. Princeton Univ. Press, Princeton.
4. Bennett, C.A. (1952). Asymptotic properties of ideal linear estimators. Ph. D. thesis, University of Michigan.
5. Chernoff, H., Gastwirth, J.L. and Johns, M.V. Jr. (1967). Asymptotic distribution of linear combinations of order statistics with application to estimation.Ann. Math. Statist., 38, 52–72.