@article{RSMUP_1992__88__111_0,
     author = {Petronio, Carlo},
     title = {Direct sums of {Cartan} factors},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {111--125},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {88},
     year = {1992},
     mrnumber = {1209118},
     zbl = {0807.46076},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1992__88__111_0/}
}