@article{MZ_1988__198_3_173915,
     author = {Regina Kleine},
     title = {Discreteness {Conditions} for the {Laplacian} on {Complete,} {Non-Compact} {Riemannian} {Manifolds.}},
     journal = {Mathematische Zeitschrift},
     pages = {127--142},
     publisher = {mathdoc},
     volume = {198},
     number = {3},
     year = {1988},
     zbl = {0622.53024},
     url = {http://geodesic.mathdoc.fr/item/MZ_1988__198_3_173915/}
}