1. On Group-Divisible Designs with Block Size Four and Group-Type g ^u m ¹

   • G. Ge
   • R. S. Rees

   OriginalPaper Pages: 5 - 24

2. Finite Linear Spaces II

   • Malcolm Greig

   OriginalPaper Pages: 25 - 47

3. On Orthogonal Double Covers of Graphs

   • Hans-Dietrich O. F. Gronau
   • Martin Grüttmüller
   • Volker Leck

   OriginalPaper Pages: 49 - 91

4. Modular Arithmetic on Elements of Small Norm in Quadratic Fields

   • M. J. Jacobson Jr.
   • H. C. Williams

   OriginalPaper Pages: 93 - 110

5. A New Bound on the Number of Designs with Classical Affine Parameters

   • Clement Lam
   • Vladimir D. Tonchev

   OriginalPaper Pages: 111 - 117

6. Partitioning Sets of Triples into Small Planes

   • Rudolf Mathon
   • Anne Penfold Street

   OriginalPaper Pages: 119 - 130

7. Enumeration of 2-(9, 3, λ) Designs and Their Resolutions

   • Patric R. J. Östergård
   • Petteri Kaski

   OriginalPaper Pages: 131 - 137

8. Ranks of q-Ary 1-Perfect Codes

   • Kevin T. Phelps
   • Mercè Villanueva

   OriginalPaper Pages: 139 - 144

9. Existence of Perfect 4-Deletion-Correcting Codes with Length Six

   • Nabil Shalaby
   • Jianmin Wang
   • Jianxing Yin

   OriginalPaper Pages: 145 - 156

10. Parity Encoding of Binary Sequences

    • Gustavus J. Simmons

    OriginalPaper Pages: 157 - 164

11. Packing Arrays and Packing Designs

    • Brett Stevens
    • Eric Mendelsohn

    OriginalPaper Pages: 165 - 176