TY - JOUR AU - Kahan, W. TI - Circumscribing an Ellipsoid about the Intersection of Two Ellipsoids JO - Canadian mathematical bulletin PY - 1968 SP - 437 EP - 441 VL - 11 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1968-050-2/ DO - 10.4153/CMB-1968-050-2 ID - 10_4153_CMB_1968_050_2 ER -