An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Mäenpää M, Riikonen J, Kontunen-Soppela S, Rousi M, Oksanen E.Mäenpää M, et al. Among authors: riikonen j.Tree Physiol. 2011 Aug;31(8):808-18. doi: 10.1093/treephys/tpr075. Epub 2011 Aug 18.Tree Physiol. 2011.PMID: 21856655
Riikonen J, Kets K, Darbah J, Oksanen E, Sober A, Vapaavuori E, Kubiske ME, Nelson N, Karnosky DF.Riikonen J, et al.Tree Physiol. 2008 Feb;28(2):243-54. doi: 10.1093/treephys/28.2.243.Tree Physiol. 2008.PMID: 18055435
Riikonen J, Syrjälä L, Tulva I, Mänd P, Oksanen E, Poteri M, Vapaavuori E.Riikonen J, et al.Environ Pollut. 2008 Nov;156(2):536-43. doi: 10.1016/j.envpol.2008.01.008. Epub 2008 Mar 4.Environ Pollut. 2008.PMID: 18289750