@article{10_4064_sm145_1_2,
     author = {Kazuaki Taira and Angelo Favini and Silvia Romanelli},
     title = {Feller semigroups and degenerate elliptic operators {with
Wentzell} boundary conditions},
     journal = {Studia Mathematica},
     pages = {17--53},
     publisher = {mathdoc},
     volume = {145},
     number = {1},
     year = {2001},
     doi = {10.4064/sm145-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm145-1-2/}
}