HERTEL, Heike - SCHNECK, Volker. Genetic and phenotypical variation of Scots pine (Pinus sylvestris L.) populations due to seed origin and environmental conditions at experimental sites. In Forest genetics : international journal of forest genetics. - Arbora Publishers : Zvolen. ISSN 1335-048X, 1999, vol. 6, no. 2, s. 65-72.