Jeffreys, H. (1948), Theory of Probability, 2nd ed., Oxford University Press, Oxford.
Johnson, J. L. & Weh rly, T. (1978), Some Angular-linear Distributions and Related Re-
gression Mo dels, Journal of the American Statistical Association 73, 602–606.
Judge, G., Griffiths, W., Hill, R. C., L¨u tkepohl, H. & Lee, T. (1985), The Theory and
Practice of Econometrics, 2nd ed ., Wiley, New York.
Jupp, P. E. (1987), A Non-parametric Correlation Coefficient and Two-sam ple Test for
Random Vectors or Directions, Biometrika 74, 887–890.
Jupp, P. E . & Spurr, B. D. (1989), Statistical Estimation of a Shock Centre: Slate I s lands
Astrobleme, Mathematical Geology 21, 191–198.
Kanatani, K. (1993), Geometric Computation f or Machine Vision, Oxford, Clarendon Pr ess.
Kasa, I. (1976), A Circle Fitting Pro cedure and its Error An alysis, IEEE Transactions on
Instrumentation and Measurement 25, 8–14.
Laycock, P. J. (1975), Optimal Design: Regression Models for Directions, Biometrika
62, 305–311.
Lenth, R. V. (1981), On Finding the Source of a Signal, Technometrics 23, 149–154.
Long, J. S. & Ervin, L. H. (2000), Using Heteroskedasticity-Consistent Standard Errors in
the Lin ear Regression Model, The American Statistician 54, 217–224.
Mackenzie, J . K. (1957), The Estimation of an Orientation Relationship, Acta. Crystallog.
10, 61–62.
92