TY - Generic T1 - Stress responses of Calluna vulgaris to reduced and oxidised N applied under real world conditions Y1 - 2008 A1 - Sheppard, L.J. A1 - Leith, I.D. A1 - Crossley, A. A1 - van Dijk, N. A1 - Fowler, D. A1 - Sutton, M.A. A1 - Woods, C. JF - Environmental Pollution VL - 154 (3) ER -