TY  - JOUR
AU  - S. A. Stepin
TI  - Asymptotic estimates for the kernel of the semigroup generated by a~perturbation of the biharmonic operator by a~potential
JO  - Sbornik. Mathematics
PY  - 2012
SP  - 893
EP  - 921
VL  - 203
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2012_203_6_a5/
LA  - en
ID  - SM_2012_203_6_a5
ER  -