%0 Journal Article %1 journals/fuin/Biskup84 %A Biskup, Joachim %D 1984 %J Fundam. Inform. %K dblp %N 1 %P 129-150 %T Extending the Relational Algebra for Relations with Maybe Tuples and Existential and Universal Null Values. %U http://dblp.uni-trier.de/db/journals/fuin/fuin7.html#Biskup84 %V 7

@article{journals/fuin/Biskup84, added-at = {2003-11-27T00:00:00.000+0100}, author = {Biskup, Joachim}, biburl = {https://www.bibsonomy.org/bibtex/23cd4de898b2b83cedf51633ea1568c74/dblp}, date = {2003-11-27}, description = {dblp}, interhash = {d2c7a9a4866cf67d4dc73570d4207a27}, intrahash = {3cd4de898b2b83cedf51633ea1568c74}, journal = {Fundam. Inform.}, keywords = {dblp}, number = 1, pages = {129-150}, timestamp = {2003-11-27T00:00:00.000+0100}, title = {Extending the Relational Algebra for Relations with Maybe Tuples and Existential and Universal Null Values.}, url = {http://dblp.uni-trier.de/db/journals/fuin/fuin7.html#Biskup84}, volume = 7, year = 1984 }