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{\bf Darryn Bryant, Heather Gavlas and Alan C. H. Ling}
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{\bf Skolem-type Difference Sets for Cycle Systems}
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Cyclic $m$-cycle systems of order $v$ are constructed for all
$m\geq 3$, and all $v\equiv 1(\hbox{mod }2m)$. This result has been
settled previously by several authors. In this paper, we provide a
different solution, as a consequence of a more general result,
which handles all cases using similar methods and which also
allows us to prove necessary and sufficient conditions for the
existence of a cyclic $m$-cycle system of $K_v-F$ for all $m\geq
3$, and all $v\equiv 2(\hbox{mod }2m)$.

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