Alfred G. Dale, Nell B. Dale
Schema and Occurence Structure Transformations in Hierarchical Systems
SIGMOD, 1976.
@inproceedings{SIGMOD-1976-DaleD, author = "Alfred G. Dale and Nell B. Dale", booktitle = "{Proceedings of the Sixth ACM SIGMOD International Conference on Management of Data}", cdrom = "SIGMOD76/P157.PDF", pages = "157--168", publisher = "{ACM}", title = "{Schema and Occurence Structure Transformations in Hierarchical Systems}", year = 1976, }