TY  - JOUR
AU  - L. Yu. Motylev
TI  - Perturbation theory in a complex domain for equations of Turritin type with a small parameter multiplying the derivative
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 1904
EP  - 1913
VL  - 23
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_11_a7/
LA  - ru
ID  - DE_1987_23_11_a7
ER  -