TY - JOUR AU - A. G. Ramm TI - Spectral Properties of Schrödinger-type Operators and Large-time Behavior of the Solutions to the Corresponding Wave Equation JO - Mathematical modelling of natural phenomena PY - 2013 SP - 207 EP - 214 VL - 8 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20138116/ DO - 10.1051/mmnp/20138116 LA - en ID - MMNP_2013_8_1_a15 ER -