@article{CRMATH_2007__345_11_621_0,
     author = {Moritz Kassmann},
     title = {The theory of {De} {Giorgi} for non-local operators},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {621--624},
     publisher = {Elsevier},
     volume = {345},
     number = {11},
     year = {2007},
     doi = {10.1016/j.crma.2007.10.007},
     language = {en},
}