@article{10_1017_S0017089501030105,
     author = {Djordjevi\'c, Slavis\u{a} V. and Han, Young Min},
     title = {Spectral continuity for operator matrices},
     journal = {Glasgow mathematical journal},
     pages = {487--490},
     year = {2001},
     volume = {43},
     number = {3},
     doi = {10.1017/S0017089501030105},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089501030105/}
}