@article{10_1090_S0894_0347_97_00233_6,
     author = {Volberg, A.},
     title = {Matrix {\ensuremath{\mathit{A}}_{\ensuremath{\mathit{p}}}} weights via {\ensuremath{\mathit{S}}-functions}},
     journal = {Journal of the American Mathematical Society},
     pages = {445--466},
     year = {1997},
     volume = {10},
     number = {2},
     doi = {10.1090/S0894-0347-97-00233-6},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-97-00233-6/}
}