Rutigliano, F.A., D’Ascoli, R., Virzo De Santo, A. (2004): Soil microbial metabolism and nutrient status in a Mediterranean area as affected by plant cover. Soil Biology & Biochemistry xx: xxx–xxx.
Ruxton, G.D., Colegrave, N. (2003): Experimental Design for the Life Sciences. Oxford University Press, Oxford, U.K.
Ruxton, G.D., Colegrave, N. (2003): Experimental design for the life sciences. Oxford University Press.
Růžička, J. (1996): Brouci (Insecta: Coleoptera sutí vrchu Plešivec (severní Čechy, CHKO České středohoří). Klapalekiana, 32: 229-235.
