Author: Urs Format: MarkdownItexadded pointer to
* [[André Haefliger]], _On the space of morphisms between étale groupoids_, In: P. Robert Kotiuga (ed.) _A Celebration of the Mathematical Legacy of Raoul Bott_ ([arXiv:0707.4673](https://arxiv.org/abs/0707.4673), [ams:crmp-50](https://bookstore.ams.org/crmp-50))
<a href="https://ncatlab.org/nlab/revision/diff/mapping+stack/9">diff</a>, <a href="https://ncatlab.org/nlab/revision/mapping+stack/9">v9</a>, <a href="https://ncatlab.org/nlab/show/mapping+stack">current</a>
added pointer to
André Haefliger, On the space of morphisms between étale groupoids, In: P. Robert Kotiuga (ed.) A Celebration of the Mathematical Legacy of Raoul Bott (arXiv:0707.4673, ams:crmp-50)