TY  - JOUR
AU  - Antunes, Pedro
AU  - Freitas, Pedro
TI  - New bounds for the principal Dirichlet eigenvalue of planar regions.
JO  - Experimental mathematics
PY  - 2006
SP  - 333
EP  - 342
VL  - 15
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EXMA_2006__15_3_225221/
LA  - en
ID  - EXMA_2006__15_3_225221
ER  -