Library Networking in the Finnish Academic Libraries. - Juha Hakala (INDC, 1992)

DC-5: The Helsinki Metadata Workshop; A Report on the Workshop and Subsequent Developments. - Stuart Weibel; Juha Hakala (D Lib Mag., 1998)

Using International Standard Book Numbers as Uniform Resource Names. - Juha Hakala; Hartmut Walravens (RFC, 2001)

Using National Bibliography Numbers as Uniform Resource Names. - Juha Hakala (RFC, 2001)

Archiving the Web: European experiences. - Juha Hakala (Program, 2004)

The seven levels of identification: An overview of the current state of identifying objects within digital libraries. - Juha Hakala (Program, 2006)

Revision of the URN standards. - Juha Hakala (Int. J. Knowl. Learn., 2014)

Persistent Identifiers for Digital Cultural Heritage: Tutorial. - Jonathan Clark; Juha Hakala; Maurizio Lunghi; Marcel Ras; Remco van Veenendaal (iPRES, 2016)

Uniform Resource Name (URN) Namespace Registration Transition. - John C. Klensin; Juha Hakala (RFC, 2017)