@article{10_4064_sm_77_5_509_517,
     author = {Krystyna Sk\'ornik},
     title = {Sobolev's and local derivatives},
     journal = {Studia Mathematica},
     pages = {509--517},
     year = {1983},
     volume = {77},
     number = {5},
     doi = {10.4064/sm-77-5-509-517},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-77-5-509-517/}
}