Reinhard Pichler, Sebastian Skritek. Tractable counting of the answers to conjunctive queries. J. Comput. Syst. Sci., 79(6):984-1001, 2013. [doi]
@article{PichlerS13,
title = {Tractable counting of the answers to conjunctive queries},
author = {Reinhard Pichler and Sebastian Skritek},
year = {2013},
doi = {10.1016/j.jcss.2013.01.012},
url = {http://dx.doi.org/10.1016/j.jcss.2013.01.012},
researchr = {https://researchr.org/publication/PichlerS13},
cites = {0},
citedby = {0},
journal = {J. Comput. Syst. Sci.},
volume = {79},
number = {6},
pages = {984-1001},
}