Estilai, A. & Ghaffari, S.M. 1978: A cytogenetic study of Compositae of Iran, I. species of Khorasan province.- 7th. National Genetics Congress. Jundishapur University, Ahvaz, Iran.
Iranshahr, M. 1979: Sclerorhachis rechingeri ( Asteraceae- Anthemideae ), A new species from N. Khorasan.- Pl. Syst. Evol. 132: 149-152.
Wilson, G.B. 1945: The venetian turpentine mounting medium, Stain Technology, 20:133-135.
)
