Resolvable group divisible designs with block size 3. - Ahmed M. Assaf; Alan Hartman (Discret. Math., 1989)

On packing designs with block size 5 and index 4. - Ahmed M. Assaf; Alan Hartman (Discret. Math., 1990)

The packing of pairs by quadruples. - Ahmed M. Assaf (Discret. Math., 1991)

Packing designs with block size 6 and index 5. - Ahmed M. Assaf; Alan Hartman; Nabil Shalaby (Discret. Math., 1992)

Packing Designs with Block Size 5 and Indexes 8, 12, 16. - Ahmed M. Assaf; Nabil Shalaby (J. Comb. Theory A, 1992)

Packing Designs with Block Size 5 and Index 2: The Case v Even. - Ahmed M. Assaf; Nabil Shalaby; L. P. S. Singh (J. Comb. Theory A, 1993)

Bipacking pairs by quintuples: The case nu=13 (mod 20). - Ahmed M. Assaf (Discret. Math., 1994)

Packing pairs by quintuples with index 2: v odd, v != 13 (mod 20). - Ahmed M. Assaf; L. P. S. Singh (Discret. Math., 1994)

An Application of Modified Group Divisible Designs. - Ahmed M. Assaf (J. Comb. Theory A, 1994)

On Covering Designs with Block Size 5 and Index 5. - Ahmed M. Assaf (Des. Codes Cryptogr., 1995)

Directed packings with block size 5 and odd v. - Ahmed M. Assaf; A. Mahmoodi; Nabil Shalaby; Jianxing Yin (Australas. J Comb., 1996)

Modified group divisible designs with block size 4 and λ>1. - Ahmed M. Assaf (Australas. J Comb., 1997)

On covering designs with block size 5 and index 11≤λ≤21: the case v≡0(mod 4). - Ahmed M. Assaf; L. P. S. Singh (Australas. J Comb., 1997)

On Packing Designs with Block Size 5 and Indexes 3 and 6. - Ahmed M. Assaf; Nabil Shalaby; L. P. S. Singh (Ars Comb., 1997)

Directed packings with block size 5. - Ahmed M. Assaf; Nabil Shalaby; Jianxing Yin (Australas. J Comb., 1998)

Directed covering with block size 5 and index even. - Ahmed M. Assaf (Discret. Math., 1998)

Modified group divisible designs with block size 4 and lambda = 1. - Ahmed M. Assaf; Ruizhong Wei (Discret. Math., 1999)

Directed packing and covering designs with block size four. - Ahmed M. Assaf; Nabil Shalaby; Jianxing Yin (Discret. Math., 2001)

Modified group divisible designs with block size 5 and lambda=1. - R. Julian R. Abel; Ahmed M. Assaf (Discret. Math., 2002)

Directed Covering with Block Size 5 and Index Odd. - Ahmed M. Assaf; H. Alhalees; L. P. S. Singh (Electron. Notes Discret. Math., 2002)

Directed covering with block size 5 and v even. - Ahmed M. Assaf; H. Alhalees; L. P. S. Singh (Australas. J Comb., 2003)

Pair covering designs with block size 5. - R. Julian R. Abel; Ahmed M. Assaf; Frank E. Bennett; Iliya Bluskov; Malcolm Greig (Discret. Math., 2007)

Modified group divisible designs with block size 5 and even index. - R. Julian R. Abel; Ahmed M. Assaf (Discret. Math., 2008)