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APA Citation
Stajano, F., Mjølsnes, S. F., Jenkinson, G., & Thorsheim, P. (Eds.) (2016). Technology and practice of passwords : 9th International Conference, PASSWORDS 2015, Cambridge, UK, December 7-9, 2015, Proceedings. Switzerland : Springer. http://access.bl.uk/ark:/81055/vdc_100071255109.0x000001