The Simula language itself
- Graham Birtwistle: Simula – its features and prospects (BCS conference on High level languages, York 1972; published as NCC S-44, February 1973)
- Stein Krogdahl: Concepts and terminology in the Simula programming language (unpublished, April 2010)
- Jakob Palme (translated to Norwegian by Bjørn Myrhaug): Simula 67, an advanced programming and simulation language (NCC S-17, May 1970)
- Jakob Palme: Ökad datasäkerhet med nytt begrepp i Simula-språket ("Increased data security with new concept in the Simula language") (1973) introduced the hidden/protected construct
The future
- Andrew P Black: Object-oriented programming: challenges for the next fifty year (invited talk at the opening of the Ole-Johan Dahl building at the University of Oslo, 2011)