1. 1. Draft International Standard ISO/DIS , "Graphical Kernel System (GKS), Functional Description, Information Processing," ISO/ TC97/ SC5/ WG2 N117 (1982 ).
2. 2. "Report on the EEC workshop on Graphics Certification, Defining a Device Interface for Certification, Miltenberg/ Darmstadt, FRG, 25/28 April 1982 ," Research and Development Report, Fachgebiet Graphisch-Interaktive Systeme, Nr. GRIS 82-4, Technische Hochschule Darmstadt (1982 ).