First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector - Abbasi, R; Abdou, Y; Abu-Zayyad, T; Adams, J; Aguilar, J; Ahlers, M; Andeen, K; Auffenberg, J; Bai, X; Baker, M; Barwick, S; Bay, R; et al. (Physical Review D, 2011)