1 A.. Sesana, W.J. Weber, C.J. Killow, M.. Perreur-Lloyd, D.I. Robertson, H.. Ward, E.D. Fitzsimons, J.. Bryant, A.M. Cruise, G.. Dixon, D.. Hoyland, D.. Smith, J.. Bogenstahl, P.W. McNamara, R.. Gerndt, R.. Flatscher, G.. Hechenblaikner, M.. Hewitson, O.. Gerberding, S.. Barke, N.. Brause, I.. Bykov, K.. Danzmann, A.. Enggaard, A.. Gianolio, V.. Hansen, G.. Heinzel, A.. Hornstrup, O.. Jennrich, J.. Kullmann, S.. Møller-Pedersen, T.. Rasmussen, J.. Reiche, Z.. Sodnik, M.. Suess, M.. Armano, T.. Sumner, P.L. Bender, T.. Akutsu, and B.S. Sathyaprakash, General Relativity and Gravitation 46, (2014).