%0 Journal Article %T Positron-electron pairs produced in heavy-ion collisions. %A Ahmad, Irshad; Austin, Sam; Back, Birger; Betts, R; Calaprice, Frank; Dunford, Robert; Freedman, Stuart; Freer, Martin; Happ, Thomas; Henderson, Dale; Kutschera, Walter; Last, Juergen; Lister, Christopher; Rhein, Martin; Schiffer, John; Wilt, Philip; Wolanski, Mark; Wuosmaa, Alan %D 1999 %J Physical Review C: Nuclear Physics %N 064601 %P , %R %V 60 %X %Z %8 1999 %] %&