@article{10_21136_CMJ_1991_102465,
     author = {Medkov\'a, Dagmar},
     title = {On the convergence of {Neumann} series for noncompact operators},
     journal = {Czechoslovak Mathematical Journal},
     pages = {312--316},
     year = {1991},
     volume = {41},
     number = {2},
     doi = {10.21136/CMJ.1991.102465},
     mrnumber = {1105448},
     zbl = {0754.47005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102465/}
}