Richard Burns, the former global head of retail structured products and hybrid products at Citi in London, has been appointed global head of the bank's global market Yield Book business, according to a Citi internal memo seen by SRP. Yield Book, originally developed by Salomon Brothers in 1989, is a wholly-owned subsidiary of Citigroup providing analytics and indices to buy-side and sell-side institutions. Yield Book products are used for portfolio and risk management, performance attribution