@article{MS2_1983__52_166845,
     author = {Bernard Russo and Yaakov Friedman},
     title = {Contracctive projections on operator triple systems.},
     journal = {Mathematica Scandinavica},
     pages = {279--311},
     publisher = {mathdoc},
     volume = {52},
     year = {1983},
     zbl = {0547.46048},
     url = {http://geodesic.mathdoc.fr/item/MS2_1983__52_166845/}
}