1. O. O. Aalen, and H. K. Gjessing .2001 .Understanding the shape of the hazard rate: a process point of view .Statistical Science,16:1 -22 .
2. S. R. Beissinger, and D. R. McCullough .2002 .Population viability analysis Chicago University Press, Chicago, Illinois, USA.
3. Experimental Studies of Extinction Dynamics
4. G. E. Belovsky, C. Mellison, C. Larson, and P. A. Van Zandt .2002 .How good are PVA models? Testing their predictions with experimental data on the brine shrimp .Pages257 -283inS. R. Beissinger, D. R. McCullough, editors.Population viability analysis Chicago University Press, Chicago, Illinois, USA.
5. D. R. Cox, and D. Oakes .1984 .Analysis of survival data Chapman and Hall, London, UK.