%0 Journal Article %T Introduction: Special issue on enhancing sales force productivity %A Mantrala, Murali K. %A Albers, Sönke %A Gopalakrishna, Srinath %A Joseph, Kissan %D 2008 %J Journal of Personal Selling and Sales Management %@ 0885-3134 %N 2 %V 28 %P 109–113 %! Mantrala, Albers et al. 2008 – Introduction