equation icon  dh [ ( l2 )]1/2 S --- = ± C - cos2h a2(1- E2) + --z2-- =_ Q(h), dt ( ) sin h df lz a ( 2 2 ) S --- = - aE - ---2-- + -- E(r + a )- alz= _ P, dt ( sin h D ) (28) dt- --lz--) 2 r2-+-a2( 2 2 S dt = - aE - sin2h asin h + D E(r + a ) - alz =_ T, -- S dr- = ± V~ R, dt