Reference

Grigori G. Goncharenko, Arkadi E. Silin, Vladimir E. Padutov (1995): Intra- and interspecific genetic differentiation in closely related pines from Pinus subsection Sylvestres (Pinaceae) in the former Soviet Union – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 194: 39 - 54.