TY  - JOUR
AU  - A. N. Vasil'ev
AU  - A. K. Kazanskii
TI  - Convexity properties of Legendre transformations (variational methods in quantum field theory)
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1973
SP  - 43
EP  - 58
VL  - 15
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1973_15_1_a2/
LA  - ru
ID  - TMF_1973_15_1_a2
ER  -