KRAHULCOVÁ, Anna,
Olga ROTREKLOVÁ, František KRAHULEC, Radka ROSENBAUMOVÁ and Ivana PLAČKOVÁ. Enrichning ploidy level diversity: the role of apomictic and sexual biotypes of Hieracium subgen. Pilosella (Asteraceae) that coexist in polyploid populations.
Folia Geobotanica. Pruhonice: Institute of Botany, 2009, vol. 44, No 3, p. 281-306. ISSN 1211-9520.