@article{GDZPPN000363995,
title = {A Note on the Circle Containment Problem.},
journal = {Discrete \& computational geometry},
volume = {4},
year = {1989},
pages = {263-264},
zbl = {0673.52008},
url = {http://dml.mathdoc.fr/item/GDZPPN000363995}
}
Hayward, R. A Note on the Circle Containment Problem.. Discrete & computational geometry, Tome 4 (1989) pp. 263-264. http://gdmltest.u-ga.fr/item/GDZPPN000363995/