@article{1102650544,
author = {Popa, Sorin},
title = {Relative dimension, towers of projections and commuting squares of subfactors.},
journal = {Pacific J. Math.},
volume = {140},
number = {2},
year = {1989},
pages = { 181-207},
language = {en},
url = {http://dml.mathdoc.fr/item/1102650544}
}
Popa, Sorin. Relative dimension, towers of projections and commuting squares of subfactors.. Pacific J. Math., Tome 140 (1989) no. 2, pp. 181-207. http://gdmltest.u-ga.fr/item/1102650544/