K. Kereselidze, N. Lachashvili, D. Kikodze, M. Khutsishvili, and A. Schröter, “Tulipa biflora Pall. (Liliaceae) - a new species for the flora of Georgia (South Caucasus)”, JNS-AASCI, vol. 19, no. 3, Nov. 2021.