Stephan Seifermann Henning Groenda Survey on the Applicability of Textual Notations for the Unified Modeling Language. 3-24 2016 MODELSWARD (Revised Selected Papers) https://doi.org/10.1007/978-3-319-66302-9_1 conf/modelsward/2016s db/conf/modelsward/modelsward2016s.html#SeifermannG16a