TY  - JOUR
AU  - Steinmann, O.
TI  - On the characterization of physical states in gauge theories
JO  - Annales de l'I.H.P. Physique théorique
PY  - 1989
SP  - 299
EP  - 321
VL  - 51
IS  - 3
PB  - Gauthier-Villars
UR  - http://archive.numdam.org/item/AIHPA_1989__51_3_299_0/
LA  - en
ID  - AIHPA_1989__51_3_299_0
ER  -