@article{AA_2018_30_4_a3,
     author = {E. Korotyaev and N. Saburova},
     title = {Spectral estimates for {Schr\"odinger} operators on periodic discrete graphs},
     journal = {Algebra i analiz},
     pages = {61--106},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2018_30_4_a3/}
}