@article{10_1017_S2040618500033670,
     author = {Everitt, W. N.},
     title = {A note on positive definite matrices},
     journal = {Glasgow mathematical journal},
     pages = {173--175},
     year = {1958},
     volume = {2},
     number = {4},
     doi = {10.1017/S2040618500033670},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S2040618500033670/}
}