Galkina, M.A., L.M. Makhinya, Yu.K. Vinogradova, and A.S. Ryabchenko. 2014. “Morphological Characteristics of Bidens Connata Muehl. Ex Willd. In Different Localities of Secondary Area (European Russia, Ukraine)”. Plant Introduction 62 (June), 43-49. https://doi.org/10.5281/zenodo.1494318.