Phenomenology of ultrafine particle concentrations and size distribution across urban Europe oleh Pedro Trechera, Meritxell Garcia-Marlès, Xiansheng Liu, Cristina Reche, Noemí Pérez, Marjan Savadkoohi, David Beddows, Imre Salma, Máté Vörösmarty, Andrea Casans, Juan Andrés Casquero-Vera, Christoph Hueglin, Nicolas Marchand, Benjamin Chazeau, Grégory Gille, Panayiotis Kalkavouras, Nikos Mihalopoulos, Jakub Ondracek, Nadia Zikova, Jarkko V. Niemi, Hanna E. Manninen, David C. Green, Anja H. Tremper, Michael Norman, Stergios Vratolis, Konstantinos Eleftheriadis, Francisco J. Gómez-Moreno, Elisabeth Alonso-Blanco, Holger Gerwig, Alfred Wiedensohler, Kay Weinhold, Maik Merkel, Susanne Bastian, Jean-Eudes Petit, Olivier Favez, Suzanne Crumeyrolle, Nicolas Ferlay, Sebastiao Martins Dos Santos, Jean-Philippe Putaud, Hilkka Timonen, Janne Lampilahti, Christof Asbach, Carmen Wolf, Heinz Kaminski, Hicran Altug, Barbara Hoffmann, David Q. Rich, Marco Pandolfi, Roy M. Harrison, Philip K. Hopke, Tuukka Petäjä, Andrés Alastuey, Xavier Querol