INTERFACE c/o Hanseatic City of Rostock, Neuer Markt 1, 18055 Rostock, Germany, Phone: +49 381 381 6153 Fax: + 49 381 381 9808
INTERFACE PLUS c/o Public Transport Association Warnow, Stampfmüllerstr. 40, 18057 Rostock, Germany, Phone: +49 381 492 36 96 Fax: + 49 381 802 28 10