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Momentary mood response to natural outdoor environments in four European cities
Michelle C. Kondoa, Margarita Triguero-Mas, David Donaire-Gonzalez, Edmund Seto, Antònia Valentín, Gemma Hurst, Glòria Carrasco-Turigas, Daniel Masterson, Albert Ambròs, Naomi Ellis, Wim Swart, Nora Davis, Jolanda Maas, Michael Jerrett, Christopher J. Gidlow, Mark J. Nieuwenhuijsen. Environment International 134:105237 (2020).