Arnab Bhattacharyya Elena Grigorescu Prasad Raghavendra Asaf Shapira Testing Odd-Cycle-Freeness in Boolean Functions. 75 2011 18 Electronic Colloquium on Computational Complexity (ECCC) http://eccc.hpi-web.de/report/2011/075 db/journals/eccc/eccc18.html#BhattacharyyaGRS11