@article{DBLP:journals/tods/NavatheF76,
author = {Shamkant B. Navathe and
James P. Fry},
title = {Restructuring for Large Data Bases: Three Levels of Abstraction},
journal = {ACM Trans. Database Syst.},
volume = {1},
number = {2},
year = {1976},
pages = {138-158},
ee = {http://doi.acm.org/10.1145/320455.320461},
bibsource = {DBLP, http://dblp.uni-trier.de}
}