Högberg M.N., Blaško R., Bach L.H., Hasselquist N.J., Egnell G., Näsholm T., Högberg P. The return of an experimentally N-saturated boreal forest to an N-limited state: Observations on the soil microbial community structure, biotic N retention capacity and gross N mineralisation. 2014. Plant and Soil. 381. 1-2. 45-60. 10.1007/s11104-014-2091-z.