@article{GDZPPN002211971,
title = {An example of an irreducible subfactor of the hyperfinite II1 factor with rational, noninteger index.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {450},
year = {1994},
pages = {21-34},
zbl = {0802.46073},
url = {http://dml.mathdoc.fr/item/GDZPPN002211971}
}
Bisch, Dietmar. An example of an irreducible subfactor of the hyperfinite II1 factor with rational, noninteger index.. Journal für die reine und angewandte Mathematik, Tome 450 (1994) pp. 21-34. http://gdmltest.u-ga.fr/item/GDZPPN002211971/