John Peterson Paul Hudak Alastair Reid Gregory D. Hager FVision: A Declarative Language for Visual Tracking. 304-321 2001 conf/padl/2001 PADL http://link.springer.de/link/service/series/0558/bibs/1990/19900304.htm db/conf/padl/padl2001.html#PetersonHRH01