@article{10_1017_S0017089599000026,
     author = {Wilson, Julie},
     title = {The relationship between polar and {ACoperators}},
     journal = {Glasgow mathematical journal},
     pages = {431--439},
     year = {1999},
     volume = {41},
     number = {3},
     doi = {10.1017/S0017089599000026},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089599000026/}
}