Spatio-temporal variability of isotopic and chemical tracers in high-elevation water sources, Eastern European Alps - Matteo Delpero; Stefano Brighenti; Francesca Bearzot; Giulia Bertolotti; Monica Tolotti; Maria Cristina Bruno; Andrea Fischer; Gerfried Winkler; Werner Tirler; Leonardo Cerasino; Francesco Comiti (Journal of Hydrology, 2025)