Johan Kylander, Heikki Helin, Kimmo Koivunen, and Juha Lehtonen. Together Forever, or How We Created a Common and Collaborative Digital Preservation Service. In Proceedings of the 16th International Conference on Digital Preservation (iPRES 2019),Amsterdam, September 16 - 20, 2019

Juha Lehtonen, Heikki Helin, Johan Kylander, and Kimmo Koivunen. PDF Mayhem: Is Broken Really Broken? In Proceedings of the 15th International Conference on Digital Preservation (iPRES 2018), Boston, USA. September 24 - 27, 2018

Kuisma Lehtonen, Pauliina Somerkoski, Juha Törnroos, Mikko Vatanen, and Kimmo Koivunen. Modular Pre-Ingest Tool for Diverse Needs of Producers. In Proceedings of the 14th International Conference on Digital Preservation (iPRES 2017), Kyoto, Japan, September 25-29, 2017

Juha Lehtonen, Kuisma Lehtonen, Aarno Tenhunen, Juha Törnroos, Ville-Pekka Vainio, and Mikko Vatanen. Impressed by Ingest - Efficient and Reliable Workflows. In Open Repositories 2016 Conference. Dublin, Ireland, 13-16 June, 2016.

Juha Lehtonen, Heikki Helin, Kimmo Koivunen, Kuisma Lehtonen, and Mikko Vatanen. A National Preservation Solution for Cultural Heritage. In Christopher Lee, Eld Zierau, Kam Woods, Helen Tibbo, Maureen Pennock, Yukio Maeda, Nancy McGovern, Leo Konstantelos, and Jonathan Crabtree (editors), Proceedings of the 12th International Conference on Digital Preservation (iPRES 2015), pp. 247-248, Chapel Hill, North Carolina, USA, November, 2015.

Juha Lehtonen, Heikki Helin, Kimmo Koivunen, and Kuisma Lehtonen. On Preparedness of Memory Organizations for Ingesting Data. In José Borbinha, Michael Nelson, and Steve Knight (editors), Proceedings of the 10th International Conference on Preservation of Digital Objects (iPres 2013), pp. 276-279, Lisbon, Portugal, September, 2013.

Heikki Helin, Kimmo Koivunen, Juha Lehtonen, and Kuisma Lehtonen. Towards Preserving Cultural Heritage of Finland. In Proceedings of the Cultural Heritage on line - Trusted Digital Repositories  & Trusted Professionals, Florence, Italy, December 10-14, 2012. NBN=


Mikko Vatanen, Ville-Pekka Vainio, Juha Lehtonen, Heikki Helin, and Kimmo Koivunen. Digital Preservation Service Architecture. In PREFORMA International Conference, Tallinn, Estonia, October 11-12, 2017

J. Lehtonen, H. Helin, S. Dallmeier-Tiessen, M. Guercio, P. Herterich, K. Kaur, A. Lavasa, R. Salmivalli, Recommendations for Preservation Data Policies, Ninth International Conference on Open Repositories 2014, Helsinki, Finland, 6/2014.