References
- Hanamura T., 2011, East Japan Earthquake and Tsunami and Underground Structures, Oral Presentation, Open Session in World Tunnel Congress 2011, 24 May 2011, Helsinki.
- Helsinki City, 2009, The Helsinki Underground Master Plan, Brochure, Helsinki City Planning Department, www.hel2.fi/ksv/julkaisut/esitteet/esite_2009-8_en.pdf
- Helsinki City, 2011, Annual Report 2010 of the Helsinki City Real Estate Department (in Finnish and in Swedish).
- Helsinki Energy, 2012, Production of District Cooling.
- Kalliala M., 2008, Talsinki Island, A 21st Century Pragmatic Utopia, Master's Thesis in Architecture, Helsinki University of Technology.
- Vhaho I., 2011a Keynote lecture (Helsinki Experience with Master Planning for Use of Underground Space), Proceedings of the Joint HKIE-HKIP Conference on Planning and Development of Underground Space, The Hong Kong Institution of Engineers & The Hong Kong Institute of Planners, 23-24 September 2011, Hong Kong, pp. 1-9.
- Vhaho I., 2011b, Workshop on "Use of Underground Space in Hong Kong" for the Hong Kong Government's engineers and city planners, 26 September 2011, Hong Kong.
- Vhaho I., 2016, Land Use : Underground Resources and Master Plan in Helsinki.
- Vhaho I., 2012, Development for urban underground space in Helsinki, SBE16 Tallinn and Helsinki Conference; Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki.
- Detailed and accurate online geographic information about the Helsinki City region by various maps, aerial photography, plans and real estate data can be found at: http://ptp.hel.fi/index_en.html
- Technical services and large-scale utility tunnel networks in bedrock are described in more detail at: www.geotechnics.fi
- The Finnish Geotechnical Society SGY maintains the website www.sgy.fi/ for professionals who actively participate in ground engineering. News in English about the Helsinki - Tallinn Rail Tunnel can be found at: www.getunderground.fi
- Finnish experts belong to the highest international level in the field of hard rock engineering. The Finnish Tunnelling Association MTR-FTA is a trailblazer that represents Finland in the International Tunnelling and Underground Space Association (ITA).