1. Distributions on the sphere and on the projective plane;Bingham,1964
2. Estimation of a multivariate density;Cacoullos;Ann. Inst. Statist. Math.,1966
3. Tests of uniformity for spherical data;Diggle;Austral. Jour. Statist.,1985
4. Statistical analysis of spherical data;Fisher,1986
5. Dispersion on a sphere;Fisher,1953