1. Phylogeny and Biogeography of Erythronium (Liliacea) inferred from chloroplast matK and nuclear rDNA ITS sequences;Allen;Syst. Bot.,2003
2. Ascherson, P., Graebner, P., 1905–1907. Synopsis der Mitteleuropäischen Flora. Bd. 3. W. Engelmann, Leipzig.
3. Participation of endoplasmic reticulum in the unequal distribution of plastids during generative cell formation in Gagea lutea (L.) Ker-Gaw. (Liliaceae);Bohdanowicz;Acta Biol. Cracoviensia Ser. Bot.,1999
4. Boissier, E., 1882. Gagea. In: Flora Orientalis. Geneve et Basiliae 5, 203–211.
5. Heterogeneity of the internal transcribed spacer 1 (ITS1) in Tulipa (Liliaceae);Booy;Plant Syst. Evol.,2000