@article{10_4064_sm_54_3_285_290,
     author = {Lutz Weis},
     title = {On the surjective (injective) envelope of strictly (co-) singular operators},
     journal = {Studia Mathematica},
     pages = {285--290},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1975},
     doi = {10.4064/sm-54-3-285-290},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-54-3-285-290/}
}