Stochastic target hitting time and the problem of early retirement. - Boda Kang; Jerzy A. Filar; Yuanlie Lin; Lieneke Spanjers (IEEE Trans. Autom. Control., 2004)

Closed loop two-echelon repairable item systems. - Lieneke Spanjers; Jan-Kees C. W. van Ommeren; W. H. M. Zijm (OR Spectr., 2005)