TY - JOUR AU - BECHTLUFT-SACHS, STEFAN TI - TENSION FIELD AND INDEX FORM OF ENERGY-TYPE FUNCTIONALS JO - Glasgow mathematical journal PY - 2003 SP - 117 EP - 122 VL - 45 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089502001064/ DO - 10.1017/S0017089502001064 ID - 10_1017_S0017089502001064 ER -