@inproceedings{YangGaamas14a, author = {Yongjie Yang and Jiong Guo}, title = {The control complexity of {$r$}-approval: from the single-peaked case to the general case}, booktitle = {AAMAS}, pages = {621-628}, year = {2014}, url = {http://dl.acm.org/citation.cfm?id=2615832} }