TY - JOUR T1 - Ecosystem responses to reduced nitrogen and sulphur inputs into two coniferous forest stands in the Netherlands JF - Forest Ecology and Management Y1 - 1995 A1 - Boxman, A.W. A1 - van Dam, D. A1 - van Dijk, H.F.G. A1 - Hogervorst, R.F. A1 - Koopmans, C.J. VL - 71 ER -