Susan G. Barwick, D. J. Marshall. Conics and multiple derivation. Discrete Mathematics, 312(10):1623-1632, 2012. [doi]
@article{BarwickM12,
title = {Conics and multiple derivation},
author = {Susan G. Barwick and D. J. Marshall},
year = {2012},
doi = {10.1016/j.disc.2012.02.016},
url = {http://dx.doi.org/10.1016/j.disc.2012.02.016},
researchr = {https://researchr.org/publication/BarwickM12},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {312},
number = {10},
pages = {1623-1632},
}