The following publications are possibly variants of this publication:
- Revisiting Slepian concentration problem on the sphere for azimuthally non-symmetric regionsZubair Khalid, Salman Durrani, Rodney A. Kennedy, Parastoo Sadeghi. icspcs 2011: 1-7 [doi]
- Slepian Spatial-Spectral Concentration Problem on the Sphere: Analytical Formulation for Limited Colatitude-Longitude Spatial RegionAlice P. Bates, Zubair Khalid, Rodney A. Kennedy. tsp, 65(6):1527-1537, 2017. [doi]
- Spatial-Slepian Transform on the SphereAdeem Aslam, Zubair Khalid. tsp, 69:4474-4485, 2021. [doi]