@article{ZNSL_1996_228_a8,
     author = {M. I. Gordin},
     title = {Homoclinic sums criterion for vanishing of spectral density},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {94--110},
     publisher = {mathdoc},
     volume = {228},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1996_228_a8/}
}