Val Tannen Peter Buneman Shamim A. Naqvi Structural Recursion as a Query Language. 9-19 DBPL1991/P009.pdf 1991 DBPL db/conf/dbpl/dbpl91.html#TannenBN91 conf/dbpl/91 db/conf/dbpl/TannenBN91.html journals/vldb/AbiteboulB95 journals/tods/AlbanoCO85 conf/popl/AhoU79 conf/vldb/BancilhonBKV87 journals/tcs/BunemanJO91 conf/pods/BancilhonK86 conf/pods/BeeriNRST87 conf/icalp/TannenS91 conf/pods/HullS88 conf/sigmod/ImielinskiNV91 books/cs/NaqviT89 conf/lfp/OhoriB88 conf/sigmod/OhoriBT89 journals/tods/Schmidt77