Dendroclimatic signals deduced from riparian versus upland forest interior pines in North Karelia, Finland - Helama, Samuli; Arentoft, B.W.; Collin-Haubensak, O.; Hyslop, M.D.; Brandstrup, C.K.; Mäkelä, H.M.; Tian, Q.H.; Wilson, R. (JP, 2013)