added two publications

Author: kgjenkins

docs/further-reading.md

@@ -9,8 +9,16 @@
 
 ### [A Metadata Schema for Geospatial Resource Discovery Use Cases](https://journal.code4lib.org/articles/9710)
 
-Presents an earlier version of the GeoBlacklight schema and the motivations behind its design. Full citation: Hardy, Darren, and Kim Durante (2014). "A Metadata Schema for Geospatial Resource Discovery Use Cases." *Code4Lib* 25. [https://journal.code4lib.org/articles/9710](https://journal.code4lib.org/articles/9710).
+Presents an earlier version of the GeoBlacklight schema and the motivations behind its design. Full citation: Hardy, Darren, and Kim Durante (2014). "A Metadata Schema for Geospatial Resource Discovery Use Cases." *Code4Lib Journal* 25. [https://journal.code4lib.org/articles/9710](https://journal.code4lib.org/articles/9710).
 
 ### [Consortial Geospatial Data Collection: Toward Standards and Processes for Shared GeoBlacklight Metadata](https://doi.org/10.31229/osf.io/kp5r6)
 
-Discusses strategies for authorship and management of interoperable GeoBlacklight metadata. Full citation: Battista, Andrew, Karen Majewicz, Stephen Balogh, and Darren Hardy (2018). "Consortial Geospatial Data Collection: Toward Standards and Processes for Shared GeoBlacklight Metadata." *Journal of Library Metadata* 17:3-4, 183-200, DOI: [10.1080/19386389.2018.1443414](https://doi.org/10.1080/19386389.2018.1443414).
+Discusses strategies for authorship and management of interoperable GeoBlacklight metadata. Full citation: Battista, Andrew, Karen Majewicz, Stephen Balogh, and Darren Hardy (2017). "Consortial Geospatial Data Collection: Toward Standards and Processes for Shared GeoBlacklight Metadata." *Journal of Library Metadata* 17:3-4, 183-200, DOI: [10.1080/19386389.2018.1443414](https://doi.org/10.1080/19386389.2018.1443414).
+
+### [Usability Analysis of the Big Ten Academic Alliance Geoportal: Findings and Recommendations for Improvement of the User Experience](https://journal.code4lib.org/articles/12932)
+
+Full citation: Blake, Mara, Karen Majewicz, Amanda Tickner, and Jason Lam (2017). "Usability analysis of the Big Ten Academic Alliance Geoportal: Findings and recommendations for improvement of the user experience." *Code4Lib Journal* 38. [https://journal.code4lib.org/articles/12932](http://journal.code4lib.org/articles/12932)
+
+### [Mapping search queries to metadata fields in a Geoblacklight repository](https://doi.org/10.1080/19386389.2020.1915459)
+
+Full citation: White, Philip B., and Erik Radio (2020). "Mapping search queries to metadata fields in a Geoblacklight repository." *Journal of Library Metadata* 20:4, 219-235, DOI: [10.1080/19386389.2020.1915459](https://doi.org/10.1080/19386389.2020.1915459)