Rafiul Ahad, K. V. Bapa Rao, Dennis McLeod. On Estimating the Cardinality of the Projection of a Database Relation. ACM Trans. Database Syst., 14(1):28-40, 1989. [doi]
@article{AhadRM89,
title = {On Estimating the Cardinality of the Projection of a Database Relation},
author = {Rafiul Ahad and K. V. Bapa Rao and Dennis McLeod},
year = {1989},
doi = {10.1145/62032.62034},
url = {http://doi.acm.org/10.1145/62032.62034},
tags = {database},
researchr = {https://researchr.org/publication/AhadRM89},
cites = {0},
citedby = {0},
journal = {ACM Trans. Database Syst.},
volume = {14},
number = {1},
pages = {28-40},
}