@article{MS2_1982__50_166797,
     author = {Ulrich Groh and Burkhard K\"ummerer},
     title = {Bibounded operators on {W*-algebras.}},
     journal = {Mathematica Scandinavica},
     pages = {269--285},
     publisher = {mathdoc},
     volume = {50},
     year = {1982},
     zbl = {0505.46047},
     url = {http://geodesic.mathdoc.fr/item/MS2_1982__50_166797/}
}