References

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Beurle, K., Harper, D., Jones, D.H.P., Murray, C.D., Taylor, D.B., Williams I.P. Astron.Astrophys., 269:564, 1993.

Har93

Harper, D., Taylor, D.B. Astron.Astrophys., 268:326, 1993.

Har94

Harper, D., Taylor, D.B. Astron.Astrophys., 284:619, 1994.

Str90

Strugnell, P.R., Taylor, D.B. Astron.Astrophys., 83:289, 1990.