[1]
题目：Age-Dependent Minimal Repair ；作者：Henry W. Block, Wagner S. Borges, Thomas H. Savits；出处：Journal of Applied Probability, Vol. 22, No. 2 (Jun., 1985), pp. 370-385；所在数据库：http://www.jstor.org/

[2]
题目：A Comparison of the Bad As Old and Superimposed Renewal Models，作者：Saul Blumenthal, J. A. Greenwood, L. H. Herbach，出处：Management Science, Vol. 23, No. 3 (Nov., 1976), pp. 280-285，所在数据库：http://www.jstor.org/

[3]
题目：Distinguishing Heterogeneity from Decreasing Hazard Rates，作者：Dean A. Follmann, Matthew S. Goldberg，出处：Technometrics, Vol. 30, No. 4 (Nov., 1988), pp. 389-396，所在数据库：http://www.jstor.org/

谢谢！每篇5币请自行设置。