1) BERG B. Changes in organic-chemical components during decomposition. Long-term decomposition in a Scots pine forest I. Canadian Journal of Botany. (1982) vol.60, p.1310-1319.
2) BEYERS R. J. Ecolgical microcosms. Springer-Verlag. (1993)
3) BROWN G. G. Effects of Earthworms on Plant Production in the Tropics. Earthworm Management in Tropical Agroecosystems. CAB international. (1999)
5) DANGERFIELD J. M. Ingestion of mineral soil/litter mixtures and faecal pellet production in the southen African millipede Alloporus uncinatus (Attems). Pedobiologia. (1993) vol.37, p.159-166.