Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
A.Binzet, R. & Orcan, N. 2007: A new species of Onosma L. (Boraginaceae) from Southern Turkey. – Novon 17: 08. Okt
B.Riedl, H., Binzet, R. & Orcan, N. 2005: A new species of Onosma (Boraginaceae- Lithospermeae) from Southern Turkey. – Edinburgh journal of botany 61: 127-130
C.Teppner, H. 1988: Onosma kaheirei spec. nova und O. erectum (Boraginaceae) aus Griechenland. – Phyton (Horn) 28: 115-131