Formandl, J. and T. Shejbal. Processor EK-Program for Translation of Symbolic Instructions in EPOS Code pp212-221

Information Processing Machines: Proceedings of th (1965) Information Processing Machines: Proceedings of the Symposium held in Prague on September 7th-9th, 1964. Czechislovak Academy of Sciences (Prague) and Iliffe Books, Ltd. (London) 1965  

Languages mentioned EK {1964} EPOS symbolic assembler