Reference

M. Breitenbach-Dorfner, Monika Konnert, Wilhelm Pinsker, Franz Starlinger, Thomas Geburek (1997): The contact zone between two migration routes of silver fir, Abies alba (Pinaceae), revealed by allozyme studies – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 206: 259 - 272.