\bib{1981/downey} \yr 1981 \mr 82h:68064 \by Peter Downey \by Benton Leong \by Ravi Sethi \paper Computing sequences with addition chains \jour SIAM Journal on Computing \issn 0097--5397 \vol 10 \pages 638--646 \url http://cr.yp.to/\allowbreak bib/\allowbreak entries.html#\allowbreak 1981/\allowbreak downey \endref