@article{AA_2001_13_2_a2,
     author = {S. Ivanov and N. Kalton},
     title = {Interpolation of subspaces and applications to exponential bases},
     journal = {Algebra i analiz},
     pages = {93--115},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2001_13_2_a2/}
}