TY  - JOUR
AU  - P. M. Akhmet'ev
TI  - Quadratic helicities and the energy of magnetic fields
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2012
SP  - 16
EP  - 28
VL  - 278
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_2012_278_a1/
LA  - ru
ID  - TM_2012_278_a1
ER  -