A.  Leip, Leach, A. M., Musinguzi, P., Tumwesigye, T., Olupot, G., Tenywa, J. Stephen, Mudiope, J., Hutton, O., Cordovil, C. Md.S., Bekunda, M., and Galloway, J. N., ?{Nitrogen-neutrality: a step towards sustainability}?, Environmental Research Letters, vol. 9, p. 115001, 2014.

M. O.  Hutton, Leach, A. M., Leip, A., Galloway, J. N., Bekunda, M., Sullivan, C., and Lesschen, J. P., ?{Toward a nitrogen footprint calculator for Tanzania}?, Environmental Research Letters, vol. 12, 2017.