A search for very high energy gamma-ray emission from scorpius X-1 with the magic telescopes - Aleksic, J.; Alvarez De Eulate, Eva; Antonelli, L.; Antoranz, P.; Asensio, M.; Backes, M.; Barrio, J.; Bastieri, D.; Becerra, J.; Bednarek, W.; Berduygin, A.; Berger, K.; et al. (Institute of Physics Publishing Ltd., 2011)