Battipaglia, G. Kabala, J. P. Pacheco-Solana, A. Niccoli, F. Bräuning, A. Campelo, F. Cufar, K. Luis, M. de De Micco, V. Klisz, M. Koprowski, M. García-González, I. Nabais, C. Vieira, J. Wrzesinski, P. Zafirov, N. Cherubini, P. Intra-annual density fluctuations in tree rings are proxies of air temperature across Europe Sci. rep. (Nat. Publ. Group) 10.1038/s41598-023-39610-8 2023 2023