TY  - JOUR
AU  - Vladica Andrejić
TI  - Strong duality principle for four-dimensional Osserman manifolds
JO  - Kragujevac Journal of Mathematics
PY  - 2010
SP  - 17 
EP  -  28
VL  - 33
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KJM_2010_33_1_a1/
ID  - KJM_2010_33_1_a1
ER  -