Tokaryuk, A.I., and I.I. Chornej. “State of Coenopopulation of Cypripedium Calceolus L. (Orchidaceae Juss.) in the Bukovynske Prykarpattya”. Plant Introduction 42 (June 1, 2009): 14-20. Accessed November 5, 2024. http://plantintroduction.org/index.php/pi/article/view/656.