Ridha Horchani
College of applied sciences, Dhofar University, Salalah
L. Wacker
College of applied sciences, Dhofar University, Salalah
N. B. Jørgensen
College of applied sciences, Dhofar University, Salalah
D. Birkmose
College of applied sciences, Dhofar University, Salalah
W. Ertmer
College of applied sciences, Dhofar University, Salalah
C. Klempt
College of applied sciences, Dhofar University, Salalah
N. Winter
College of applied sciences, Dhofar University, Salalah
J. Sherson
College of applied sciences, Dhofar University, Salalah
J.J. Arlt
Institute of physics and astronomy, Aarhus university