TY  - JOUR
AU  - Covachev, V.
TI  - Periodicity of the Population Size of an Age-Dependent Model With a Dominant Age Class by Means of Impulsive Perturbations
JO  - International Journal of Applied Mathematics and Computer Science
PY  - 2000
SP  - 147
EP  - 155
VL  - 10
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IJAMCS_2000_10_1_a8/
LA  - en
ID  - IJAMCS_2000_10_1_a8
ER  -