@misc{10_4153_CMB_1964_038_6,
     title = {A {Quartic} with 28 {Real} {Bitangents}},
     journal = {Canadian mathematical bulletin},
     pages = {399--404},
     year = {1964},
     volume = {7},
     number = {3},
     doi = {10.4153/CMB-1964-038-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-038-6/}
}