Equation Icon  (R) √ --(R) -1--i 0 a ˆ b ˆ uret = 2uB = s − √2-ξR(s)Y1i + 2vI(s)laξI(s)lb, (111 ) √ -- ( √ -- ) --2-i 0 --2-j 0 λ ≈ 2 ξI(s)Y1i 1 − 2 vR (s)Y 1j , (112 )