On the implementation of stream ciphers based on a new family of algebraic graphs
Jakub Kotorowicz, Urszula Romańczuk, Vasyl Ustimenko · 2011
The READER can find the missing theoretical definitions on directed graphs in [8]. Let Φ be an irreflexive binary relation over the set V, i.e., Φ ⊂ V × V and for each v the pair (v, v) is not an element of Φ.