@article{ELA_2000__7__a7,
     author = {Bebiano, Nat\'alia and Li, Chi-Kwong and Da Provid\^encia, Jo\~ao},
     title = {Generalized numerical ranges of permanental compounds arising from quantum systems of bosons},
     journal = {The electronic journal of linear algebra},
     pages = {73--91},
     publisher = {mathdoc},
     volume = {7},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2000__7__a7/}
}