1. Dubey, S. D.: Characterization Theorems for Several Distributions and their Applications. Journal of the Industrial Mathematics Society,16, 1966a, Part 1, 1–22.
2. —— Transformations for Estimation of Parameters. Journal of the Indian Statistical Association,4, 1966b, Nos. 3 and 4, 109–124.
3. Lomax, K. S.: Business failures: another example of the analysis of failure data. Jour. Amer. Stat. Assoc.,49, 1954, 847–852.