Поспєлов, С.В. 2015. The morphometric parameters of seeds of genus Echinacea Moench representatives and their association with agrometeorological factors. Plant varieties studying and protection. 3-4(28-29) (Dec. 2015), 39–44. DOI:https://doi.org/10.21498/2518-1017.3-4(28-29).2015.58455.