TY  - JOUR
AU  - R. Kh. Sabirov
TI  - Convolution of the secular equation of perturbation theory for a~degenerate case
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1987
SP  - 79
EP  - 84
VL  - 73
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1987_73_1_a7/
LA  - ru
ID  - TMF_1987_73_1_a7
ER  -