Checklist of the vascular flora of Wielkopolska (Poland): casual alien species
Jackowiak, Bogdan, Celka, Zbigniew, Chmiel, Julian, Latowski, Karol, Żukowski, Waldemar
Local distribution pattern of Virga pilosa (L.) Hill. (Dipsacaceae) as an effect of its life and dispersal strategy
Bernard, Rafał, Chmiel, Julian