Gamma-ray excess from a stacked sample of high- and intermediate-frequency peaked blazars observed with the magic telescope - Aleksic, J.; Antonelli, L.; Antoranz, P.; Backes, M.; Baixeras, C.; Barrio, J.; Bastieri, D.; Becerra, J.; Bednarek, W.; Berduygin, A.; Berger, K.; Bernardini, E.; et al. (Institute of Physics Publishing, 2011)