@article{TMF_1998_114_1_a3,
     author = {S. V. Savchenko},
     title = {On the ground state of free and random discrete {Hamiltonians} perturbed by an operator of rank one for a~critical value of the coupling constant},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {94--103},
     year = {1998},
     volume = {114},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_114_1_a3/}
}