Über einige dünnste Kreisüberdeckungen konvexer Bereiche durch endliche Anzahl von kongruenten Kreisen (Q1069133)

The authors determine the size of the largest equilateral triangle that can be covered by 1, 2, 3, 4, 6, 9, or 10 unit circles, and the largest squares that can be covered by 1, 2, 3, 4, 5, 6, or 7 unit circles. For the covering of equilateral triangles by \(n(n+1)\) unit circles, \(n\geq 5\), they give (the obvious) bounds.