@article{10_4064_sm_133_1_19_27,
     author = {A. Eduardo Gatto and  },
     title = {On {Sobolev} spaces of fractional order and \ensuremath{\varepsilon}-families of operators on spaces of homogeneous type},
     journal = {Studia Mathematica},
     pages = {19--27},
     publisher = {mathdoc},
     volume = {133},
     number = {1},
     year = {1999},
     doi = {10.4064/sm-133-1-19-27},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-133-1-19-27/}
}