Meritxell Garcia-MarlΓ¨s, Rosa Lara, Cristina Reche, NoemΓ­ PΓ©rez, Aurelio TobΓ­as, Marjan Savadkoohi, David Beddows, Imre Salma, MΓ‘tΓ© VΓΆrΓΆsmarty, TamΓ‘s Weidinger, Christoph Hueglin, Nikos Mihalopoulos, Georgios Grivas, Panayiotis Kalkavouras, Jakub OndrÑček, NadΔ•ΕΎda ZΓ­kovΓ‘, Jarkko V. Niemi, Hanna E. Manninen, David C. Green, Anja H. Tremper, Michael Norman, Stergios Vratolis, Konstantinos Eleftheriadis, Francisco J. GΓ³mez-Moreno, Elisabeth Alonso-Blanco, Alfred Wiedensohler, Kay Weinhold, Maik Merkel, Susanne Bastian, Barbara Hoffmann, Hicran Altug, Jean-Eudes Petit, Olivier Favez, Sebastiao Martins Dos Santos, Jean-Philippe Putaud, Adelaide Dinoi, Daniele Contini, Hilkka Timonen, Janne Lampilahti, Tuukka PetΓ€jΓ€, Marco Pandolfi, Philip K. Hopke, Roy M. Harrison, AndrΓ©s Alastuey, Xavier Querol, Inter-annual trends of ultrafine particles in urban Europe, Environment International,2023. DOI: https://doi.org/10.1016/j.envint.2024.108510