@article{MS2_1993__73_2_167274,
     author = {Masaki Izumi},
     title = {On the type {III} principal graphs of subfactors.},
     journal = {Mathematica Scandinavica},
     pages = {307--319},
     year = {1993},
     volume = {73},
     number = {2},
     zbl = {0808.46089},
     url = {http://geodesic.mathdoc.fr/item/MS2_1993__73_2_167274/}
}