@article{10_21136_CMJ_1996_127323,
     author = {Tarsia, Antonio},
     title = {Some topological properties preserved by nearness between operators and applications to {P.D.E.}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {607--624},
     publisher = {mathdoc},
     volume = {46},
     number = {4},
     year = {1996},
     doi = {10.21136/CMJ.1996.127323},
     mrnumber = {1414598},
     zbl = {0879.47039},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1996.127323/}
}