@article{RM_2002_57_4_a0,
     author = {M. Braverman and O. Milatovic and M. A. Shubin},
     title = {Essential self-adjointness of {Schr\"odinger-type} operators on manifolds},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {641--692},
     year = {2002},
     volume = {57},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2002_57_4_a0/}
}