RELFUN Guide: Programming with Relations and Functions Made EasyHarold Boley; Klaus Elsbernd; Michael Herfert; Michael Sintek; Werner SteinDFKI, DFKI Documents (D), Vol. 93-12, 1993.
RFM Manual: Compiling RELFUN into the Relational/Functional MachineHarold Boley; Klaus Elsbernd; Hans-Günther Hein; Thomas KrauseDFKI, DFKI Documents (D), Vol. 91-03, 1991.
