From the results of the NATO/CCMS Pilot Study Air Pollution, fifteen recommendations have been derived, one of which deals with air quality modeling. Since the publication of this recommendation, a world-wide cooperation in the field of modeling activities has proved the necessity to review the state of the art of air quality modeling and to show international trends in model standardization. Therefore the Modeling Panel decided to prepare a Technical Document of this so-called 'Grey Literature' and started questionnaire action. Response was so impressive, that the Modeling Panel decided to split this document into two parts: (1) Bibliography of Grey Literature on Applied Air Quality Models (especially GAUSSian Plume Models); and (2) Bibliography of Grey Literature on New Modeling Techniques. This volume represents the final version of the part concerning GAUSSian plume models.