HALAJ, Daniel et al. The marketing modelling of the mix of forest ecosystem services with the accent on cultural services under the conditions of the pandemic COVID-19. In Book of abstracts All-IUFRO conference 2022 : Forests in a volatile world - global collaboration to sustain forests and their societal benefits [elektronický zdroj]. - [Vienna] : [University of Applied Arts], 2022, p. 9-10 [online]. Dostupné na internete: <https://www.iufro.org/fileadmin/material/publications/proceedings-archive/all-iufro-conference-2022-abstracts.pdf>