Bernd Bank Marc Giusti Joos Heintz Luis Miguel Pardo On the intrinsic complexity of point finding in real singular hypersurfaces. 1141-1144 2009 109 Inf. Process. Lett. 19 http://dx.doi.org/10.1016/j.ipl.2009.07.014 db/journals/ipl/ipl109.html#BankGHP09