@CONFERENCE\{IMM1970-02289, author = "D. Bj{\o}rner", title = "Folded Syntax- and Recursive Flowchart-Machines", year = "1970", pages = "415-453", booktitle = "{HICSS} (Hawaii Int'l. Conf. Sys. Sci.)", volume = "", series = "", editor = "", publisher = "", organization = "", address = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/2289-full.html" }