BĘDKOWSKI, Krzysztof and STEREŃCZAK, Krzysztof. Sessile oak (Quercus petraea (Mattuschka) Liebl.) trees variability according to an analysis of multispectral images taken from UAV – first results. Ecological Questions. Online. 19 July 2013. Vol. 17, p. 25 –. [Accessed 27 April 2024]. DOI 10.12775/ecoq-2013-0013.