@article{10_4064_ap_71_2_199_209,
     author = {Henryk Ko{\l}akowski},
     title = {Properties of the {Sobolev} space $H_k^{s,s'}$},
     journal = {Annales Polonici Mathematici},
     pages = {199--209},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {1999},
     doi = {10.4064/ap-71-2-199-209},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-71-2-199-209/}
}