TY  - JOUR
AU  - Joel Hass
AU  - Roger Schlafly
TI  - Double bubbles minimize
JO  - Annals of mathematics
PY  - 2000
VL  - 151
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM_2000_151_2_a2/
ID  - AM_2000_151_2_a2
ER  -