M. Zarrei, P. Wilkin, H. J. Noltie, M. J. Ingrouille, and M. W. Chase, “CLARIFYING THE NOMENCLATURE AND TAXONOMY OF GAGEA KUNAWURENSIS (ROYLE) GREUTER (LILIACEAE) AND ALLIED TAXA”, Edinburgh J. Bot., vol. 68, no. 1, pp. 43–59, Mar. 2011, doi: 10.1017/S0960428610000296.