24 citations · 85 across the 5 of their papers we have counts for
3 papers
gr-qc2008★ 11 cited
Weyl collineations that are not curvature collineations
Ibrar Hussain, Asghar Qadir, K. Saifullah
Though the Weyl tensor is a linear combination of the curvature tensor, Ricci tensor and Ricci scalar, it does not have all and only the Lie symmetries of these tensors since it is…
math.CA2007★ 15 cited
Invariant Linearization Criteria for Systems of Cubically Semi-Linear Second-Order Ordinary Differential Equations
F. M. Mahomed, Asghar Qadir
Invariant linearization criteria of square systems of second-order quadratically semi-linear ordinary differential equations (ODEs) that can be represented as geodesic equations ar…
astro-ph2004★ 24 cited
Kerr black holes as retro-MACHOs
F. De Paolis, A. Geralico, G. Ingrosso +2
Gravitational lensing is a well known phenomenon predicted by the General Theory of Relativity. It is now a well-developed observational technique in astronomy and is considered to…