AUTHOR:
Laj, P. and Bigi, A. and Rose, C. and Andrews, E. and Lund Myhre, C. and Collaud Coen, M. and Lin, Y. and Wiedensohler, A. and Schulz, M. and Ogren, J. A. and Fiebig, M. and Gli{\ss}, J. and Mortier, A. and Pandolfi, M. and Pet\"aja, T. and Kim, S.-W. and Aas, W. and Putaud, J.-P. and Mayol-Bracero, O. and Keywood, M. and Labrador, L. and Aalto, P. and Ahlberg, E. and Alados Arboledas, L. and Alastuey, A. and Andrade, M. and Art\'{\i}\~nano, B. and Ausmeel, S. and Arsov, T. and Asmi, E. and Backman, J. and Baltensperger, U. and Bastian, S. and Bath, O. and Beukes, J. P. and Brem, B. T. and Bukowiecki, N. and Conil, S. and Couret, C. and Day, D. and Dayantolis, W. and Degorska, A. and Eleftheriadis, K. and Fetfatzis, P. and Favez, O. and Flentje, H. and Gini, M. I. and Gregori\v{c}, A. and Gysel-Beer, M. and Hallar, A. G. and Hand, J. and Hoffer, A. and Hueglin, C. and Hooda, R. K. and Hyv\"arinen, A. and Kalapov, I. and Kalivitis, N. and Kasper-Giebl, A. and Kim, J. E. and Kouvarakis, G. and Kranjc, I. and Krejci, R. and Kulmala, M. and Labuschagne, C. and Lee, H.-J. and Lihavainen, H. and Lin, N.-H. and L\"oschau, G. and Luoma, K. and Marinoni, A. and Martins Dos Santos, S. and Meinhardt, F. and Merkel, M. and Metzger, J.-M. and Mihalopoulos, N. and Nguyen, N. A. and Ondracek, J. and P\'erez, N. and Perrone, M. R. and Petit, J.-E. and Picard, D. and Pichon, J.-M. and Pont, V. and Prats, N. and Prenni, A. and Reisen, F. and Romano, S. and Sellegri, K. and Sharma, S. and Schauer, G. and Sheridan, P. and Sherman, J. P. and Sch\"utze, M. and Schwerin, A. and Sohmer, R. and Sorribas, M. and Steinbacher, M. and Sun, J. and Titos, G. and Toczko, B. and Tuch, T. and Tulet, P. and Tunved, P. and Vakkari, V. and Velarde, F. and Velasquez, P. and Villani, P. and Vratolis, S. and Wang, S.-H. and Weinhold, K. and Weller, R. and Yela, M. and Yus-Diez, J. and Zdimal, V. and Zieger, P. and Zikova, N.