Perfect Graeco-Latin balanced incomplete block designs (pergolas). - David H. Rees; Donald A. Preece (Discret. Math., 1999)

Nested balanced incomplete block designs. - John P. Morgan; Donald A. Preece; David H. Rees (Discret. Math., 2001)

Existence of OBIBDs with k=4 with and without nesting. - R. Julian R. Abel; Malcolm Greig; David H. Rees (Discret. Math., 2003)

Existence of balanced incomplete block designs for many sets of treatments. - Malcolm Greig; David H. Rees (Discret. Math., 2003)