The district was made in December 1993 by joining the old districts of Luckenwalde , JÃ 1\/4 terbog and Zossen , but also including small parts from other former districts such as Luckau . The district was formed in December 1993 by merging the previous districts Luckenwalde , JÃ 1\/4 terbog and Zossen , but also including small parts from other former districts such as Luckau .