%0 Journal Article %A Nakanishi, Masaki %A Yakaryılmaz, Abuzer %A Gainutdinova, Aida %T New results on classical and quantum counter automata %J Discrete mathematics & theoretical computer science %D 2019 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.23638/DMTCS-21-4-12/ %R 10.23638/DMTCS-21-4-12 %G en %F DMTCS_2019_21_4_a11