Andrew Dinn Norman W. Paton M. Howard Williams Alvaro A. A. Fernandes An Active Rule Language for ROCK & ROLL. 36-55 1996 conf/bncod/1996 BNCOD db/conf/bncod/bncod96.html#DinnPWF96 http://dx.doi.org/10.1007/3-540-61442-7_3