2002 |
4 | EE | Gayla S. Domke,
Johannes H. Hattingh,
Lisa R. Markus,
Elna Ungerer:
On parameters related to strong and weak domination in graphs.
Discrete Mathematics 258(1-3): 1-11 (2002) |
1998 |
3 | | Johannes H. Hattingh,
Elna Ungerer,
Michael A. Henning:
Partial signed domination in graphs.
Ars Comb. 48: (1998) |
2 | EE | Johannes H. Hattingh,
Elna Ungerer:
The signed and minus k-subdomination numbers of comets.
Discrete Mathematics 183(1-3): 141-152 (1998) |
1997 |
1 | EE | Johannes H. Hattingh,
Elna Ungerer:
Minus k-subdomination in graphs II.
Discrete Mathematics 171(1-3): 141-151 (1997) |