%0 Journal Article %T Geometric Locations of Points Equally Distance from Two Given Geometric Figures. Part 4: Geometric Locations of Points Equally Remote from Two Spheres %A Vyshnyepolskiy, V.I. %A Zavarihina, E.V. %A Peh, D.S. %K geometry, descriptive geometry, geometrical places of points, GMT, analytical geometry, line, sphere, ellipsoid of revolution, two-sheet hyperboloid of revolution %J Geometry & Graphics %D 2021 %N 9 %P 17 %I INFRA-M Academic Publishing LLC.