Strategies for interconnection networks: some methods from graph theory
Journal of Parallel and Distributed Computing
Minimum diameter of diregular digraphs of degree 2
The Computer Journal
Journal of Graph Theory
On the existence of (d,k)-digraphs
Discrete Mathematics
Almost Moore digraphs are diregular
Discrete Mathematics
Enumeration of almost Moore digraphs of diameter two
Discrete Mathematics - Special issue on the 17th british combinatorial conference selected papers
Line digraph iterations and the (d,k) problem for directed graphs
ISCA '83 Proceedings of the 10th annual international symposium on Computer architecture
Complete characterization of almost Moore digraphs of degree three
Journal of Graph Theory
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A (d,k)-digraph is a diregular digraph of degree d ≥ 4, diameter k ≥ 3 and the number of vertices d+d2+...+dk. The existence problem of (d,k)-digraphs is one of difficult problem. In this paper, we will present some new necessary conditions for the existence of such digraphs.