1. The control of floral evocation and morphogenesis;Bernier;Ann. Rev. Plant Physiol. Plant Mol. Biol.,1988
2. Control of flowering and growth of O. dubium;Cohen-Zhedek;Dapi Mida,1992
3. Cremer, M.C., Beijer, J.A., Munk, W.M., 1974. Development stages of flower formation in tulips, narcissi, irises, hyacinths and lilies. Meded. Landbouwhogeschool Wageningen, Netherlands, 74(15), 1–16.
4. Principles for forcing tulips, hyacinths, daffodils. Easter lilies and Dutch irises;De Hertogh;Sci. Hort.,1974
5. Basic forcing requirements for Israeli-grown Ornithogalum dubium;De Hertogh;Acta Hort.,1997