1. Akçin O.E. 2004. Endemik Onosma bornmuelleri Hausskn.’ nın morfolojisi, anatomisi ve ekolojisi üzerine bir araştırma (An investigation on the morphology, anatomy and ecology of Endemic Onosma bornmuelleri Hausskn.). Ecology 13: 13–19.
2. Akçin O.E. & Engin A. 2001. Onosma isauricum Boiss. & Heldr. and O. stenolobum Hausskn. Ex H. Riedl türleri üzerinde karşılaştırmalı morfolojik ve anatomik bir araştırma (Comparative morphological and anatomical study on species of Onosma isauricum Boiss. & Heldr. and O. stenolobum Hausskn. Ex H. Riedl). The Herb J. System. Bot. 8: 75–95.
3. Akçin Ö.E & Engin A. 2005. The morphological, anatomical and ecological properties of endemic Onosma bracteosum Hausskn. & Bornm. (Boraginaceae) species. Turk. J. Bot. 29: 317–325.
4. Bobrov A.V.F.C., Endress P.K., Melikian A.P., Romanov M.S., Sorokin A.N. & Bejerano A.P. 2005. Fruit structure of Amborella trichopoda (Amborellaceae). Bot. J. Linnean Soc. 148: 265–274.
5. Coskuncelebi K., Kandemir A. & Beyazoglu O. 2000. Scanning electron microscopic examination of the seeds of Ornithogalum (Liliaceae) species distributed in Black Sea Region of Turkey. Biologia 55: 397–401.