TY  - JOUR
AU  - M. Racheva
TI  - On Estimating of a Fourth-Order Differential Equations
JO  - Mathematica balkanica
PY  - 2001
SP  - 239
VL  - 15
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_2001_15_3-4_a5/
ID  - MABA_2001_15_3-4_a5
ER  -