The results of introductional and phytochemical researches of species genera Dracocephalum L. (D. grandiflorum L. and D. moldavica L.) under condition of North Forest-Steppe and Western Podillja of Ukraine - M. I. Shanaida; Yu. A. Pasemkiv; O. A. Korablova; D. B. Rakhmetov (Plant introduction, 2008)