Birtwistle, G. M., O.-J. Dahl, B. Myhrhaug, et al., SIMULA Begin, Studentlitteratur, Lund, Sweden, 1973.This is the first textbook describing Simula and its basis in Algol-60.
Dahl, O.-J. and K. Nygaard, "SIMULA - An Algol Based Simulation Language," Communications of the ACM, Vol. 9, Num. 9, 1966, pp. 671-678. This describes Simula-1, a precursor to the Object Oriented language Simula_ 67.
Dahl, O.-J. and K. Nygaard, SIMULA- A language for Programming and Description of Discrete Event Systems, Oslo 3, Norway, Norwegian Computing Center, Forskningveien 1B, 5th edition, September 1967, 124 pages. A description of SIMULA and how it is used in event simulation problems.
Dahl, O.-J., B. Myhrhaug and K. Nygaard, SIMULA-67 Common Base Language, Norwegian Computer Centre, Oslo, Norway, Pub. S-22, 1970. A major reference document for SIMULA, including precise definitions of each construct. It describes the “common base language”—features that every implementation of Simula must have.
Holmevik, J. R., "Compiling SIMULA: a historical study of technological genesis." IEEE Annals of the History of Computing, Vol. 16, Num. 4, 1994, pp. 25-37. Traces the history of the programming language. It is not a technical description of the language, but rather a sociotechnical analysis aimed at exploring the broader history of the SIMULA project including the politics of the project.
Nygaard, K. and O.-J. Dahl, "The development of the Simula languages." History of Programming Languages Conference, ACM SIGPLAN Notices, Vol. 13, Num. 8, 1978. A description of the development of SIMULA by its creators.
Nygaard, K. and O.-J. Dahl "The development of the SIMULA language." History of Programming Languages, R. Wexelblat (Ed.), Chapter. IX, pp. 439-493, 1981, Academic Press. Another interesting history of SIMULA. The Wexelblat "History of Programming Languages" is freely available here.
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