DOC: Updated presentation references

- added link to PASIG 2019 presentation.
- added details of iPres 2018 presentation using external links.

docs/resources/index.md

@@ -4,22 +4,23 @@ title: Resources
 ---
 
 ## Resources
-The following PAR resources are available for reference / context:
+The following PAR resources are available for reference/context:
 
 ## White Paper
 - [Digital Preservation Interoperability through Preservation Action Registries](https://osf.io/ns3am)
 
 ## Presentations and Background Material
 - [PAR 2020 Webinar v01 310320.pdf](./presentations/PAR 2020 Webinar v01 310320.pdf)
-- [JISC 2019 Presentation, York](./presentations/PAR Presentation York 2019.pdf)
-- [iPres 2019 Workshop]{https://doi.org/10.17605/OSF.IO/NEMJQ) - [paper](https://osf.io/s8x4d), [slides](./presentations/PAR Presentation iPres 2019.pdf), [workshop notes](https://osf.io/download/76aze/)
+- [JISC 2019 York, Presentation](./presentations/PAR Presentation York 2019.pdf)
+- [iPres 2018 Boston, Short Paper](https://osf.io/zat4e/) - [paper](https://osf.io/ns3am), [slides](https://osf.io/pxw3f)
+- [iPres 2019 Amsterdam, Workshop](https://doi.org/10.17605/OSF.IO/NEMJQ) - [paper](https://osf.io/s8x4d), [slides](./presentations/PAR Presentation iPres 2019.pdf), [workshop notes](https://osf.io/download/76aze/)
 
 ## Other PAR resources
 - [GitHub Repository](https://github.com/openpreserve/par)
 - [Project Announcement](http://openpreservation.org/news/arkivum-artefactual-the-open-preservation-foundation-and-preservica-collaborate-on-new-jisc-initiative-for-sharing-preservation-action-best-practice/)
 
 ## Contacts
-Please direct any PAR questions / queries to any of the par core team below or use the general enquiries email:
+Please direct any PAR questions/queries to any of the par core team below or use the general enquiries email:
 * info@openpreservation.org
 
 ### Open Preservation Forum