Vassil S. Dimitrov Graham A. Jullien William C. Miller Theory and applications for a double-base number system. 44- 1997 conf/arith/1997 IEEE Symposium on Computer Arithmetic http://csdl.computer.org/comp/proceedings/arith/1997/7846/00/78460044abs.htm db/conf/arith/arith1997.html#DimitrovJM97