@article{MAN_1978__233_163097,
     author = {Hermann Sohr},
     title = {St\"orungskriterien im reflexiven {Banachraum.}},
     journal = {Mathematische Annalen},
     pages = {75--88},
     year = {1978},
     volume = {233},
     zbl = {0383.47015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__233_163097/}
}