DANIHELKA, Jiří a
Olga ROTREKLOVÁ. Achillea distans (Asteraceae) confirmed as native in the Bieszczady Mts (SE Poland).
Fragmenta Floristica et Geobotanica. Kraków: W.Szafer Institute of Botany, PAN, 2002, roč. 45 (2000), 1-2, s. 257-263. ISSN 0015-931X.