@article{10_4064_sm_84_1_79_87,
     author = {Ewa Ligocka},
     title = {The {Sobolev} spaces of harmonic functions},
     journal = {Studia Mathematica},
     pages = {79--87},
     publisher = {mathdoc},
     volume = {84},
     number = {1},
     year = {1986},
     doi = {10.4064/sm-84-1-79-87},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-84-1-79-87/}
}