Makhynia L. М. . “Bidens Frondosa L. Resource Evaluation in the Dnipro River Bottomland (in Range the Forest Steppes of Ukraine)”. Annales Universitatis Paedagogicae Cracoviensis Studia Naturae, vol. 1, no. 1, Dec. 2016, pp. 85–94, https://aupcstudianaturae.uken.krakow.pl/article/view/5393.