@article{AM2_1987__33_137202,
     author = {G. Rousseau},
     title = {Note on the degree of concavity of the determinant on sets of positive definite quadratic forms.},
     journal = {Aequationes mathematicae},
     pages = {57--61},
     publisher = {mathdoc},
     volume = {33},
     year = {1987},
     zbl = {0631.10018},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__33_137202/}
}