Stachura-Suchoples, Katarzyna, and Regine Jahn. 2009. “Middle Miocene Record of Pliocaenicus Changbaiense Sp Nov. From Changbai (Jilin Province, China)”. Acta Botanica Croatica 68 (2). https://www.abc.botanic.hr/index.php/abc/article/view/114.