Pablo Albella, Department of Applied Physics (Group of Optics), University of Cantabria, Santander, Spain

Vincenzo Amendola, Department of Chemical Sciences, University of Padova, Italy

Matthew Berg, Department of Physics, Kansas State University, USA

Ludmilla Kolokolova, University of Maryland, College Park, Maryland, USA

Karri Muinonen, University of Helsinki & National Land Survey, Finland

Giuseppe Strangi, Case Western Reserve University, Cleveland, USA and Università della Calabria, Cosenza, Italy

Giovanni Volpe, Department of Physics, University of Gothenburg, Sweden

Chuji Wang, Mississippi State University, Starkville (MS), USA, and Space Science Institute, Boulder (CO), USA

Evgenij Zubko, Kyung Hee University, Yongin-shi, Republic of Korea