@article{IM_1993__111_1_144083,
     author = {Sorin Popa},
     title = {Markov traces on universal {Jones} algebras and subfactors of finite index.},
     journal = {Inventiones mathematicae},
     pages = {375--406},
     publisher = {mathdoc},
     volume = {111},
     number = {1},
     year = {1993},
     zbl = {0787.46047},
     url = {http://geodesic.mathdoc.fr/item/IM_1993__111_1_144083/}
}