@article{JGG_2019_23_1_JGG_2019_23_1_a3,
     author = {H. Katsuura },
     title = {Characterization of an {Isosceles} {Tetrahedron}},
     journal = {Journal for geometry and graphics},
     pages = {37--4},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2019},
     url = {http://geodesic.mathdoc.fr/item/JGG_2019_23_1_JGG_2019_23_1_a3/}
}