T w T Ttr w T -...
4
t c T T c i w tr w tr w T T ln c s T tr – v', i', u', s' v", i", u", s" G G G G G x G / G ) s s ( T i i r s r x i ) i i ( x i i x ) v v ( x v v x s x T r x s ) s s ( x s s x x x v p i ) u u ( x u u T s p s t , T , i