@inproceedings{NiftyGreenroom,
 author = {Fincher, Sally and K\"{o}lling, Michael and Utting, Ian and Brown,
 Neil and Stevens, Phil},
 title = {Repositories of teaching material and communities of use: nifty
 assignments and the greenroom},
 booktitle = {Proceedings of the Sixth international workshop on Computing
 education research},
 series = {ICER '10},
 year = {2010},
 isbn = {978-1-4503-0257-9},
 location = {Aarhus, Denmark},
 pages = {107--114},
 numpages = {8},
 url = {http://doi.acm.org/10.1145/1839594.1839613},
 doi = {http://doi.acm.org/10.1145/1839594.1839613},
 acmid = {1839613},
 publisher = {ACM},
 address = {New York, NY, USA},
}