Marco Macchetti Mario Caironi Luca Breveglieri Alessandra Cherubini A Complete Formulation of Generalized Affine Equivalence. 338-347 2005 conf/ictcs/2005 ICTCS http://dx.doi.org/10.1007/11560586_27 db/conf/ictcs/ictcs2005.html#MacchettiCBC05