Azpilicueta, C. V., Aruani, M. C., Chaves, E. and Reeb, P. D. (2014) “Soil nematode responses to fertilization with ammonium nitrate after six years of unfertilized apple orchard”, Spanish Journal of Agricultural Research, 12(2), pp. 353-363. doi: 10.5424/sjar/2014122-4634.