Artem Katasonov Vagan Y. Terziyan Semantic Agent Programming Language (S-APL): A Middleware Platform for the Semantic Web. 504-511 2008 ICSC http://doi.ieeecomputersociety.org/10.1109/ICSC.2008.82 conf/semco/2008 db/conf/semco/icsc2008.html#KatasonovT08