TY  - JOUR
AU  - Dragan Dimitrovski
AU  - Vladimir Rajović
TI  - A contribution to the problem of coexistence of two periodical solutions of the Hill's equation
JO  - Kragujevac Journal of Mathematics
PY  - 2007
SP  - 99 
VL  - 30
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KJM_2007_30_a6/
LA  - en
ID  - KJM_2007_30_a6
ER  -