“…For example, Jarník [14] established the bound O(t −d/2+ε ) for the relative error, with any ε > 0, for almost all ellipsoids with axes parallel to the coordinate axes. For general convex domains with non-vanishing curvature on the boundary, W. Müller [22] proved that ∆ Ω (t) = O(t −2+λ(d)+ε ), where λ(d) = (d + 4)/(d 2 + d + 2), if d ≥ 5, λ(4) = 6/17 and λ(3) = 20/43, improving on earlier results by Krätzel and Nowak [19]. For planar domains, Huxley [11] obtained this estimate with λ(2) = 46/73, which implies the relative error O(t −100/73 (log t) 315/146 ).…”