CHYTRÝ, Milan, Andreas EXNER, Richard HRIVNÁK, Karol UJHÁZY, Milan VALACHOVIČ a Wolfgang WILLNER. Context-dependence of diagnostic species: A case study of the Central European spruce forests.
Folia Geobotanica. Pruhonice: Institute of Botany, 2002, roč. 37, č. 4, s. 403-417. ISSN 1211-9520.