Carlos Iván Chesñevar María Paula González Ana Gabriela Maguitman Didactic strategies for promoting significant learning in formal languages and automata theory. 7-11 2004 ITiCSE http://doi.acm.org/10.1145/1007996.1008002 conf/iticse/2004 db/conf/iticse/iticse2004.html#ChesnevarGM04