Wingnuts (Pterocarya) & walnut family Relict trees: linking the past, present and future - Kozlowski, Gregor 1966-; Bétrisey, Sébastien 1982-; Song, Yi-Gang (Natural History Museum Fribourg (NHMF), Department of Education, Culture and Sport of the State of Fribourg, Switzerland, 2018)
Literaturverzeichnis: Seite 124-127