TY  - JOUR
AU  - A. M. Pyzh'yanov
TI  - Estimate of~the~perturbation of~the~eigenvalues of~a~two-particle Schr\"{o}dinger operator with a~hard-core potential
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1971
SP  - 225
EP  - 229
VL  - 6
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1971_6_2_a7/
LA  - ru
ID  - TMF_1971_6_2_a7
ER  -