For citations:

Smirnova A.N., Punegov V.V., Zainullina K.S. About the content of flavonols in leaves of some species of Spiraea in the North (Republic of Komi). Bulletin of the State Nikitsky Botanical Gardens. 2020;(134):61-67. (In Russ.) https://doi.org/10.36305/0513-1634-2020-134-61-67