@article{10_1017_S0017089500009599,
     author = {Tylli, Hans-Olav},
     title = {A spectral radius problem connected with weak compactness},
     journal = {Glasgow mathematical journal},
     pages = {85--94},
     year = {1993},
     volume = {35},
     number = {1},
     doi = {10.1017/S0017089500009599},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009599/}
}