1. D. R. Lorimer and M. Kramer, Handbook of Pulsar Astronomy (Cambridge Univ. Press, Cambridge, UK, 2012).
2. T. H. Hankins, Astrophys. J. 169, 487 (1971).
3. T. H. Hankins and B. J. Rickett, in Methods in Computational Physics, Vol. 14: Radio Astronomy (Academic, New York, 1975), p. 55.
4. T. H. Hankins, Astrophys. J. 177, L11 (1972).
5. J. M. Cordes and T. H. Hankins, Bull. Am. Astron. Soc. 5, 18 (1973).