TY  - BOOK
TI  - ANNALES  HENRI POINCARE : A JOURNAL OF THEORETICAL AND MATHEMATICAL PHYSICS.- VOL-13, NO-1, 2012
SN  -  1424-063
U1  - 500.05 
PY  - 2011///
CY  - AG
PB  - SPRINGER
KW  - SCIENCE- JOURNAL
ER  -