%0 Journal Article %J SIAM Journal on Computing (SICOMP) %D 1995 %T Approximating the minimum equivalent digraph %A Khuller, Samir %A Raghavachari,B. %A Young,N. %B SIAM Journal on Computing (SICOMP) %V 24 %P 859 - 872 %8 1995/// %G eng %N 4