Causes of floristical differentiation of Dentario bulbiferae-Fagetum (Zlatník 1935) Hartmann 1953 and Carici pilosae-Fagetum Oberd. 1957 associations - Gregor, Juraj; Kontriš, Jaroslav; Kontrišová, Oľga; Kukla, Ján; Mihálik, Anton