@article{AA_2002_14_1_a6,
     author = {A. A. Pozharskii},
     title = {Operators of {Wannier--Stark} type with singular potentials},
     journal = {Algebra i analiz},
     pages = {158--193},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2002_14_1_a6/}
}