Combining activities in an operational planning phase : a dynamic programming approach / R. Dekker and R.E. Wildeman, [A.C.J.M. Smit]Combining activities in an operational planning phase : a dynamic programming approach / R.E. Wildeman, R. Dekker, A.C.J.M. SmitCombining maintenance activities in an operational planning phase : a dynamic programming approach / R.E. Wildeman, R. Dekker and A.C.J.M. SmitA dynamic policy for grouping maintenance activities / R.E. Wildeman, R. Dekker and A.C.J.M. SmitA dynamic policy for grouping maintenance activities / R.E. Wildeman, R. Dekker and A.C.J.M. Smit