by Magee, H. R. M., Dufton, P. L., Keenan, F. P., Rolleston, W. R. J., Kilkenny, D., O'Donoghue, D., Koen, C., Stobie, R.S.
Published in Monthly notices of the Royal Astronomical Society (01.07.2001)

by Magee, H. R. M., Rolleston, W. R. J., Dufton, P. L., Keenan, F. P., Mooney, C. J.
Published in Monthly notices of the Royal Astronomical Society (11.11.2002)