conf/pods/84 Gösta Grahne Kari-Jouko Räihä Dependency Characterizations for Acyclic Database Schemes. 9-18 1984 PODS db/conf/pods/pods84.html#GrahneR84 http://doi.acm.org/10.1145/588011.588014 db/conf/pods/GrahneR84.html journals/anthology/cd1-3:PODS84/P009.PDF journals/anthology/dvd1:text/1-3/PODS84/P009.PDF conf/vldb/BeeriBG78 journals/jacm/BeeriFMY83 conf/pods/BeeriK83 journals/jacm/Fagin83 conf/caap/Fagin83 journals/tods/FaginMU82 conf/vldb/GrahneR83 journals/jacm/Lien82 conf/sigmod/Sciore81 conf/pods/Sciore83a books/cs/Ullman82 conf/pods/Ullman82