SONESSON, Johan. Early testing of adaptedness to temperature and water availability in Pinus sylvestris and Picea abies : doctoral thesis Swedish University of Agricultural Sciences. Umeå : Swedish University of Agricultural Sciences, 2000. 1 zv. (rôzne stránkovanie). Acta Universitatis Agriculturae Suecidae, 163. ISBN 91-576-5897-8. ISSN 1401-6230.