TY  - JOUR
AU  - Yu. F. Dolgii
TI  - Construction of the approached characteristic equations for periodic systems with aftereffect and determinants of perturbation
JO  - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki
PY  - 2008
SP  - 42
EP  - 43
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VUU_2008_2_a13/
LA  - ru
ID  - VUU_2008_2_a13
ER  -