@article{10_4064_sm154_1_4,
     author = {Thierry Coulhon and Xuan Thinh Duong and Xiang Dong Li},
     title = {Littlewood{\textendash}Paley{\textendash}Stein functions on
 complete {Riemannian} manifolds for $1\leq p\leq 2$},
     journal = {Studia Mathematica},
     pages = {37--57},
     publisher = {mathdoc},
     volume = {154},
     number = {1},
     year = {2003},
     doi = {10.4064/sm154-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm154-1-4/}
}