@article{ELMA_1976__31_141168,
     author = {Moshe Goldberg},
     title = {On {Inscribed} {Circumscribed} {Conics.}},
     journal = {Elemente der Mathematik},
     pages = {36--38},
     publisher = {mathdoc},
     volume = {31},
     year = {1976},
     zbl = {0319.50006},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1976__31_141168/}
}