@article{TMF_1970_5_1_a7,
     author = {A. G. Sigalov and I. M. Sigal},
     title = {Description of the spectrum of the energy operator of quantum-mechanical systems that is invariant with respect to permutations of identical particles},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {73--93},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_5_1_a7/}
}