@article{JGG_2015_19_2_JGG_2015_19_2_a3,
     author = {P. Honvault },
     title = {Density of {Optimal} {Packings} of {Three} {Ellipses} in a {Square}},
     journal = {Journal for geometry and graphics},
     pages = {201--209},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/JGG_2015_19_2_JGG_2015_19_2_a3/}
}