@misc{Wetter1993,
  author    = {Christof Wetter},
  title     = {Environmental compatibility test for waste water treatment plants, 1. Chinese and German Environmental Protection Technique Interchange Conference, Chongqing/China, Dezember 1993},
  institution = {Energie · Geb{\"a}ude · Umwelt (EGU)},
  type      = {lecture},
  year        = {1993},
}