@article{CMUC_1989__30_4_a27,
     author = {John, Kamil},
     title = {Compact non-nuclear operator problem},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a27/}
}