<results> <result> <title>TCP/IP Illustrated</title> <author> <last>Stevens</last> <first>W.</first> </author> </result> <result> <title>Advanced Programming in the Unix environment</title> <author> <last>Stevens</last> <first>W.</first> </author> </result> <result> <title>Data on the Web</title> <author> <last>Abiteboul</last> <first>Serge</first> </author> </result> <result> <title>Data on the Web</title> <author> <last>Buneman</last> <first>Peter</first> </author> </result> <result> <title>Data on the Web</title> <author> <last>Suciu</last> <first>Dan</first> </author> </result> </results>