@article{10_4153_CMB_2004_007_6,
     author = {Lindstr\'om, Mikael and Makhmutov, Shamil and Taskinen, Jari},
     title = {The {Essential} {Norm} of a {Bloch-to-} ${{Q}_{p}}$ {Composition} {Operator}},
     journal = {Canadian mathematical bulletin},
     pages = {49--59},
     year = {2004},
     volume = {47},
     number = {1},
     doi = {10.4153/CMB-2004-007-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-007-6/}
}