Elizabeth F. Churchill. The currencies of paper currency. Interactions, 21(1):24-25, 2014. [doi]
@article{Churchill14, title = {The currencies of paper currency}, author = {Elizabeth F. Churchill}, year = {2014}, doi = {10.1145/2543612}, url = {http://doi.acm.org/10.1145/2543612}, researchr = {https://researchr.org/publication/Churchill14}, cites = {0}, citedby = {0}, journal = {Interactions}, volume = {21}, number = {1}, pages = {24-25}, }