@article{CMJ_2003__53_3_a8,
     author = {Koliha, J. J. and Tran, Trung Dinh},
     title = {Closed semistable operators and singular differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {605--620},
     publisher = {mathdoc},
     volume = {53},
     number = {3},
     year = {2003},
     mrnumber = {2000056},
     zbl = {1080.47500},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2003__53_3_a8/}
}