Bueno, Vanderlei Costa, A note on the component lifetime estimation of a multistate monotone system through the system lifetime, Advances in applied probability , 20(3), 1988, pp. 686-689
In this paper we consider the observed lifetime of a multistate monotone system and .the critical lower set' which causes the system deterioration. Then, under suitable conditions, we identify the component lifetime distribution using a Newton.Kantorovic iterative procedure as in Meilijson (1981).