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APA Citation
Voronkov, A., & Virbitskaite, I. (Eds.) (2015). Perspectives of system informatics : 9th International Ershov Informatics Conference, PSI 2014, St. Petersburg, Russia, June 24-27, 2014. Revised selected papers. Berlin, Heidelberg : Springer. http://access.bl.uk/ark:/81055/vdc_100078036900.0x000001