| 1998 |
|---|
| 5 | | Helmut Siemon:
A Number Theoretic Conjecture and the Existence of S-Cyclic Steiner Quadruple Systems.
Des. Codes Cryptography 13(1): 63-94 (1998) |
| 1996 |
|---|
| 4 | | Helmut Siemon:
Piotrowski's Infinite Series of Steiner Quadruple Systems Revisited.
Des. Codes Cryptography 8(1-2): 239-254 (1996) |
| 1991 |
|---|
| 3 | | Helmut Siemon:
Cyclic Steiner Quadruple Systems and Köhler's Orbit Graphs.
Des. Codes Cryptography 1(2): 121-132 (1991) |
| 2 | EE | Helmut Siemon:
On the existence of cyclic Steiner Quadruple systems SQS (2p).
Discrete Mathematics 97(1-3): 377-385 (1991) |
| 1989 |
|---|
| 1 | EE | Helmut Siemon:
Infinite families of strictly cyclic Steiner quadruple systems.
Discrete Mathematics 77(1-3): 307-316 (1989) |
