Austhof, B., Bennett, P. and Christo, N. 2022. The Set of Ratios of Derangements to Permutations in Digraphs is Dense in $[0,1/2]$. The Electronic Journal of Combinatorics. 29, 1 (Jan. 2022), P1.8. DOI:https://doi.org/10.37236/10293.