Novak, F.J. and E. Petru. Tissue culture propagation of Lilium hybrids. Okazaki, K. and M. Koizumi. Callus formation and regeneration of some species of Lilium . Rick, C.M. 1984.
Plant germplasm resources.
Collier Macmillan Publishers, London, pp. Stanilova, M.I., V.P. Ilcheva, and N.A. Zagorska. Morphogenetic potential and in vitro micropropagation of endangered plant species Leucojum aestivum L. and Lilium rhodopaeum Delip. P.D. Ascher, and J.S. Zagorski. Plants from callus of the interspecific hybrid Lilium Black Beauty .