Sheppard LJ, Crossley A, Leith ID, Hargreaves KJ, Carfrae J, van Dijk N, Cape JN, Sleep D, Fowler D, Raven JA. An Automated Wet Deposition System to Compare the Effects of Reduced and Oxidised N on Ombrotrophic Bog Species: Practical Considerations. Water, Air and Soil Pollution: Focus. 2004  ;4 (6):197-205.

Sutton MA, Dragosits U, Tang YS, Fowler D. Ammonia emissions from non-agricultural sources in the UK. Atmospheric Environment. 2000  ;34:855 - 869.

Burkhardt J, Sutton MA, Milford C, Storeton-West RL, Fowler D. Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements. Atmospheric Environment . 1998  ;32:325-331.

Sutton MA, Place CJ, Eager M, Fowler D, Smith RI. Assessment of the magnitude of ammonia emissions in the United Kingdom. Atmospheric Environment. 1995  ;29:1393-1411.