Abraham Otero Paulo Félix Carlos V. Regueiro Miguel Rodríguez Senén Barro A model to perform knowledge-based temporal abstraction over multiple signals. 128-136 2003 conf/time/2003 TIME http://csdl.computer.org/comp/proceedings/time-ictl/2003/1912/00/19120128abs.htm db/conf/time/time2003.html#OteroFRRB03