%0 Journal Article %A BECHTLUFT-SACHS, STEFAN %T TENSION FIELD AND INDEX FORM OF ENERGY-TYPE FUNCTIONALS %J Glasgow mathematical journal %D 2003 %P 117-122 %V 45 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089502001064/ %R 10.1017/S0017089502001064 %F 10_1017_S0017089502001064