equation icon  a a b 2m-- tail [ tail tail c] 2 3 h00(u,r,_O_ ) =_ habe 0e0 = r + h 00 (u) + r h000(u) + h00c(u)_O_ + O(mr /R ), (590) a a b tail [ tail tail c] 2 3 h0b(u,r,_O_ ) =_ habe 0eb = h0b (u) + r h0b0(u) + h 0bc(u)_O_ + O(mr /R ), (591) a a b 2m-- tail [ tail tail c] 2 3 hab(u,r,_O_ ) =_ habe aeb = r dab + hab (u) + r hab0(u) + h abc(u)_O_ + O(mr /R ); (592)