TY  - JOUR
A1  - Buttraw, D 
A1  - Palmer, K 
A1  - Kahn, D 
T1  - A symmetric safety valve
Y1  - 2010//01
N1  - R830990
JF  - ENERGY POLICY
J1  - ENERG POLICY
J2  - Energy Policy
VL  - 38
IS  - 9
SP  - 4921
EP  - 4932
ER  -