Cullen, J. & Heywood, V. H. 1964: Paeonia in T. G. Tutin et al. Fl. Europaea. 1: 243-244. -Cambridge University Press.
Davis, P. H. & Cullen. J. 1965: Paeonia in Fl. Turkey and the East Aegean Islands. 1: 204-206. -Edinburgh.
Riedl, H. 1969: Paeonia in K. H. Rechinger Fl. Iranica 60: 1-5 Wien.
Townsend, C. C. 1980: Paeonia in Fl. Iraq. 4: 667-669. -Baghdad.
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