POP-1
Package for Online Programming.
Edinburgh, 1966
This was the first of the POP family of languages. It used reverse Polish notation. Implemented as a threaded interpreter. See POP-2, POP-10, POP-11.
EPU-R-17, University of Edinburgh, Jul 1966.
"POP-1: An Online Language", R. Popplestone, Machine Intelligence 2, E. Dale et al eds, Oliver and Boyd, Edinburgh, 1968.