TY  - JOUR
AU  - V. A. Lyubishkin
TI  - On the trace formulas of Gel'fand--Levitan and Krein
JO  - Sbornik. Mathematics
PY  - 1993
SP  - 531
EP  - 540
VL  - 74
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1993_74_2_a13/
LA  - en
ID  - SM_1993_74_2_a13
ER  -