@article{10_4064_sm203_2_1,
     author = {Emmanuel Russ and Yannick Sire},
     title = {Nonlocal {Poincar\'e} inequalities on {Lie} groups with
 polynomial volume growth and {Riemannian} manifolds},
     journal = {Studia Mathematica},
     pages = {105--127},
     publisher = {mathdoc},
     volume = {203},
     number = {2},
     year = {2011},
     doi = {10.4064/sm203-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm203-2-1/}
}