Before revision:  \mbox{%DIFAUXCMD DBLP:journals/jea/KumarMY03 proposed the open problem " Are there practical methods for computing an MEB with outliers?
After revision:  \mbox{%DIFAUXCMD DBLP:journals/jea/KumarMY03 proposed the open problem ` Are there practical methods for computing an MEB with outliers?