First rearing record and DNA sequence of Chromatomyia aizoon (Hering, 1932) (Diptera: Agromyzidae) associated with Saxifraga paniculata Miller from the Czech Republic
Miloš Černý, Jiří Kocián, Jan Ševčík
Distribution of mountain hawkweeds (Hieracium s. str.) in the Hrubý Jeseník Mountains
Jiří Kocián, Jindřich Chrtek