A. G.  Elenevskii and Zernov, A. S., ?Zametka o Hypericum strictum (Hypericaceae) i blizkikh vidakh. (Note on Hypericum strictum (Hypericaceae) and allied species.)?, Bot. Zhurn., vol. 85, pp. 52-55 (2000) -, 2000.

A. E.  Kozhevnikov and Kozhevnikova, Z. V., ?Hypericum laxum (Hypericaceae), a new species for the flora of Russia (Primorsky Territory).?, Bot. Zhurn., vol. 86, pp. 160-163 (2001) - illus., 2001.

A. N.  Sennikov, ?Vidy sektsii Hirtella roda Hypericum (Hypericaceae) v stranakh SNG i Gruzii. (Species of the section  Hirtella of the genus Hypericum (Hypericaceae) in the countries of the CIS and Georgia.)?, Bot. Zhurn., vol. 78, pp. 73-78 (1993) -, 1993.

, Vernik, R. S., and Norbobaeva, T., ?Nekotorye biologicheskie osobennosti Hypericum scabrum (Hypericaceae) v zapadnom Tyan-Shane. (Some biological features of Hypericum scabrum (Hypericaceae) from the the Western Tien Shan.)?, Bot. Zhurn., vol. 74, pp. 982-994 (1989) - illus., 1989.