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HARVARD Citation
Probst, C. et al. (eds.) (2016) Semantics, logics, and calculi : essays dedicated to Hanne Riis Nielson and Flemming Nielson on the occasion of their 60th birthdays. [Online]. Cham : Springer. Available from: http://access.bl.uk/ark:/81055/vdc_100072137356.0x000001