1. Asgari M S and Khosravi A, Frames and bases of subspaces in Hilbert spaces, J. Math. Anal. Appl. 308 (2005) 541–553
2. Asgari MS and Khosravi A, Frames of subspaces and approximation of the inverse frame operator, Houston J. Math. 33(3) (2007) 907–920
3. Contemp. Math.;P. G. Casazza,2004
4. Casazza P G and Kutyniok G, Robustness of Fusion Frames under Erasures of subspaces and of Local Frame Vectors, Radon transforms, geometry, and wavelets (LA: New Orleans) (2006) Contemp. Math., Amer. Math. Soc., Providence, RI, to appear
5. Casazza P G, Kutyniok G and Li S, Fusion frames and distributed processing, Appl. Comput. Harmon. Anal. 25 (2008) 114–132