Burkhard Stiller Jan Gerke Placi Flury Peter Reichl Hasan Charging Distributed Services of a Computational Grid Architecture. 596-601 2001 conf/ccgrid/2001 CCGRID http://csdl.computer.org/comp/proceedings/ccgrid/2001/1010/00/10100596abs.htm db/conf/ccgrid/ccgrid2001.html#StillerGFRH01