Spectral signatures discrimination of Norway spruce trees under experimentally induced drought and acute thermal stress using hyperspectral imaging - Matúš Pivovar; Roope Näsi; Eija Honkavaara; Miroslav Blaženec; Jaroslav Škvarenina; Roman Modlinger; Jaroslav Rožnovský; Rastislav Jakuš (Forest Ecology and Management, 2025)