db/conf/echt/MadiganCGVB94.html David Madigan C. Richard Chapman Jonathan Gavrin Ole Villumsen John Boose Repertory Hypergrids: An Application to Clinical Practice Guidelines. 117-125 ECHT1994/P117.pdf 1994 conf/echt/94 ECHT db/conf/echt/echt94.html#MadiganCGVB94