V. V.  Protopopova and Tkachenko, V. S., ?Istoriya ta prohnoz poshyrennya Grindelia squarrosa (Pursh) Dunal. (History and prognosis of Grindelia squarrosa (Pursh) Dunal distribution.) Ukr?, Bot. Zhurn, no. 5, pp. 457 - 461, 1979.

G. I.  Kharkhota, ?Nove mistseznakhodzhennya Grindelia squarrosa (Pursch) Dunal u Donbasi. (New occurrence of Grindelia squarrosa (Pursch) Dunal in Donbas). Ukr?, Bot. Zhurn, vol. 33, no. 5, pp. 545 - 546, 1976.

I. G.  Zog, ?A contribution to the taxonomy of the genus Coronilla L. (Leguminosae)?, Bot. Zhurn, vol. 55, pp. 982 - 994, 1970.

I. I.  Khalilov, ?Konspekt roda Crambe (Brassicaceae)?, Bot. Zhurn, vol. 78, pp. 107 - 115, 1993.

N. N.  Tsvelev, ?Synopsis of the mannagrass genus, Glyceria (Poaceae)?, Bot. Zhurn, vol. 91, no. 2, pp. 255 - 276, 2006.

N. S.  Khandzhyan, ?Kriticheskie zametki k rodu Anacyclus (Asteraceae-Anthemideae). (Critical notes on the genus Anacyclus (Asteraceae-Anthemideae)?, Bot. Zhurn, vol. 71, no. 3, pp. 354 - 357, 1986.

O. Z.  Glukhov, Kharkhota, G. I., and Nazarenko, G. S., ?Distribution and teratogenesis of Grindelia squarrosa (Pursch) Dunal in the south-east of Ukraine (in Russian). Ukr?, Bot. Zhurn, vol. 58, no. 1, pp. 64 - 67, 2001.