Wissenschaftliche 's Institut fer Kommunikationsdienste GmbH, 6th Keenigswinter Seminar on Postal Economics, Liberalization of Postal Markets।
Wissenschaftliche 's Institut fer Kommunikationsdienste ରେ ପ୍ରବନ୍ଧ ଉପସ୍ଥାପନ କରାଯାଇଥିଲା।