@article{FORUM_1992__4_6_141669,
     author = {Hideo Nagai},
     title = {Ergodic control problems on the whole {Euclidean} space and convergence of symmetric diffusions.},
     journal = {Forum mathematicum},
     pages = {159--174},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1992},
     zbl = {0749.93082},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141669/}
}