Smallest defining sets for 2-(9, 4, 3) and 3-(10, 5, 3) designs. - Tony Moran (Australas. J Comb., 1994)

Smallest defining sets for 2-(9, 4, 3) and 3-(10, 5, 3) designs: Corrigendum. - Tony Moran (Australas. J Comb., 1996)

The spectrum of minimal defining sets of some Steiner systems. - Brenton D. Gray; Rudolf Mathon; Tony Moran; Anne Penfold Street (Discret. Math., 2003)