@article{MMNP_2013_8_1_a15,
     author = {A. G. Ramm},
     title = {Spectral {Properties} of {Schr\"odinger-type} {Operators} and {Large-time} {Behavior} of the {Solutions} to the {Corresponding} {Wave} {Equation}},
     journal = {Mathematical modelling of natural phenomena},
     pages = {207--214},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2013},
     doi = {10.1051/mmnp/20138116},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20138116/}
}