@article{10_1017_S0017089500007564,
     author = {Jamison, J. E. and Lin, Pei-Kee},
     title = {A result on hermitian operators},
     journal = {Glasgow mathematical journal},
     pages = {71--72},
     year = {1989},
     volume = {31},
     number = {1},
     doi = {10.1017/S0017089500007564},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007564/}
}